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You searched for: Publication Year 2019 Remove constraint Publication Year: 2019 Subject term concrete Remove constraint Subject term: concrete
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1. ANN models for prediction of residual strength of HSC after exposure to elevated temperature

Author:
Husain Abbas; Yousef A. Al-Salloum; Hussein M. Elsanadedy; Tarek H. Almusallam
Source:
Fire safety journal 2019 v.106 pp. 13-28
ISSN:
0379-7112
Subject:
building construction; compression strength; concrete; databases; fire testing; guidelines; neural networks; prediction; surveys; temperature
Abstract:
... Although high strength concrete (HSC) is becoming popular in building construction around the globe, its performance under high temperature (or fire) exposure is not precisely known. The existing fire-design provisions were developed mostly from the results of fire tests on normal strength concrete (NSC) and thus their applicability to HSC needs to be evaluated because sufficient HSC data is now a ...
DOI:
10.1016/j.firesaf.2019.03.011

2. ANN-Based Shear Capacity of Steel Fiber-Reinforced Concrete Beams without Stirrups

Author:
Miguel Abambres; Eva O.L. Lantsoght
Source:
Fibers 2019 v.7 no.10 pp. -
ISSN:
2079-6439
Subject:
artificial intelligence; concrete; databases; equations; mechanics; neural networks; prediction; steel; uncertainty
Abstract:
... Comparing experimental results of the shear capacity of steel fiber-reinforced concrete (SFRC) beams without stirrups to the capacity predicted using current design equations and other available formulations shows that predicting the shear capacity of SFRC beams without mild steel shear reinforcement is still difficult. The reason for this difficulty is the complex mechanics of the problem, where ...
DOI:
10.3390/fib7100088

3. Access to Natural Substrates in Urban Streams Does Not Counter Impoverishment of Macroinvertebrate Communities: a Comparison of Engineered and Non-engineered Reaches

Author:
D. J. Reid; C. Tippler
Source:
Water, air, and soil pollution 2019 v.230 no.1 pp. 8
ISSN:
0049-6979
Subject:
Diptera; Gastropoda; aquatic habitat; community structure; concrete; ecosystems; engineering; landscapes; macroinvertebrates; riparian vegetation; streams; subwatersheds; urban areas; water quality; Australia
Abstract:
... Urban streams are degraded through multiple mechanisms, including severely altered flow regimes, elevated concentrations of waterborne contaminants, removal of riparian vegetation and the loss of a mosaic of heterogeneous aquatic habitats. Engineering of urban stream reaches using concrete is a widespread and extreme case of deliberate alteration of flow regimes and concomitant habitat simplificat ...
DOI:
10.1007/s11270-018-4054-0

4. Aerosol concentration, deposition, particle size, and exposure interval as mortality factors Tribolium confusum Jacquelin du Val (Coleoptera: Tenebrionidae)

Author:
Frank H. Arthur; Deanna S. Scheff; Daniel Brabec; Joseph Bindel
Source:
Journal of stored products research 2019 v.83 pp. 191-199
ISSN:
0022-474X
Subject:
Tribolium confusum; adults; aerosols; application equipment; concrete; exposure duration; fecundity; females; flour; immatures; insect control; larvae; males; methoprene; mortality; particle size; progeny; pupae; pyrethrins; residual effects; stored products
Abstract:
... A series of trials was conducted for an experiment. In the first trial, adults of Tribolium confusum Jacquelin du Val, the confused flour beetle, were exposed on concrete arenas and treated with a combination aerosol of pyrethrin + methoprene dispensed for 5, 10, and 20 min at particle sizes of 4, 8, 12, and 16 μm, inside an aerosol exposure chamber. Nearly all adult T. confusum were knocked down ...
DOI:
10.1016/j.jspr.2019.06.005

5. Ammonia emissions and mitigation from a concrete yard used by cattle

Author:
William Burchill; Francesca Reville; Tom H. Misselbrook; Christina O'Connell; Gary J. Lanigan
Source:
Biosystems engineering 2019 v.184 pp. 181-189
ISSN:
1537-5110
Subject:
ammonia; animal handling; application rate; cattle; cleaning; concrete; emissions; emissions factor; farmers; feces; urea nitrogen; urine; washing; wind tunnels
Abstract:
... Livestock excreta deposition on concrete farmyards has been identified as an important source of ammonia (NH3) emissions from agriculture. The objective of this study was to quantify the effect of urine application rate and four cleaning strategies on NH3 emissions from excreta deposited on a concrete yard. Three experiments were conducted on a concrete yard over a three week period in August 2016 ...
DOI:
10.1016/j.biosystemseng.2019.06.007

6. An analytical method for estimating leakage from a hydraulic pressure tunnel

Author:
Yong Huang; Huiyang Qiu; Zhi Dou; Zhimin Fu; Zhifang Zhou
Source:
Hydrogeology journal 2019 v.27 no.1 pp. 73-86
ISSN:
1431-2174
Subject:
analytical methods; aquifers; concrete; hydraulic conductivity; power plants; water table; China
Abstract:
... An analytical method has been proposed to estimate the leakage from a water-filling tunnel between two reservoirs, based on Darcy’s law and the position of the water table, for a phreatic aquifer. The variable water-fill level in the tunnel and an arbitrary intersection angle between the tunnel and horizontal plane were considered. The reliability of this method was validated by numerical analysis ...
DOI:
10.1007/s10040-018-1853-8

7. Analysis of the Utilization of Air-Cooled Blast Furnace Slag as Industrial Waste Aggregates in Self-Compacting Concrete

Author:
José D. Ríos; Adelardo Vahí; Carlos Leiva; Antonio Martínez-De la Concha; Héctor Cifuentes
Source:
Sustainability 2019 v.11 no.6 pp. -
ISSN:
2071-1050
Subject:
compression strength; concrete; energy; furnaces; heavy metals; industrial wastes; leaching; mechanical properties; natural resources; prices; slags
Abstract:
... In this work, the effects of replacing the aggregates of self-compacting concrete by air-cooled blast furnace slag have been analysed. Different mixes have been manufactured by substituting the fine and coarse natural aggregates by air-cooled blast furnace slag. The fracture energy and the tensile and compressive strength have been determined for each mix. The self-compacting properties of the mix ...
DOI:
10.3390/su11061702

8. Analysis on land ecological security change and affect factors using RS and GWR in the Danjiangkou Reservoir area, China

Author:
Chaoxian Liu; Xueling Wu; Lei Wang
Source:
Applied geography 2019 v.105 pp. 1-14
ISSN:
0143-6228
Subject:
anthropogenic activities; autocorrelation; concrete; models; principal component analysis; soil; soil erosion; China
Abstract:
... The Danjiangkou reservoir area is a main water source and the submerged area of the middle route of the South-to-North Water Transfer Project of China. Thus, variations in land ecological security (eco-security) have attracted considerable attention. In this study, to evaluate the land eco-security situation of the reservoir in 1996, 2006 and 2016, we used spatial principal component analysis (sPC ...
DOI:
10.1016/j.apgeog.2019.02.009

9. Application of statistical analysis to evaluate the corrosion resistance of steel rebars embedded in concrete with marble and granite waste dust

Author:
Iman Taji; Saeid Ghorbani; Jorge de Brito; Vivian W.Y. Tam; Sohrab Sharifi; Ali Davoodi; Mohammadreza Tavakkolizadeh
Source:
Journal of cleaner production 2019 v.210 pp. 837-846
ISSN:
0959-6526
Subject:
building construction; cement; compression strength; concrete; corrosion; dielectric spectroscopy; dust; granite; mechanical properties; recycling; scanning electron microscopy; sodium chloride; statistical analysis; steel; wastes
Abstract:
... In recent years, the production of waste materials has increased due to the growth of industrial activities around the world. Therefore, recycling and reusing these waste materials for different applications would make a tremendous contribution to waste elimination and sustainable building construction. The objective of this paper is to investigate the effect of marble and granite waste dust (MGWD ...
DOI:
10.1016/j.jclepro.2018.11.091

10. Assessing occupational risks in pipeline construction using FMEA-based AHP-MOORA integrated approach under Pythagorean fuzzy environment

Author:
Suleyman Mete
Source:
Human and ecological risk assessment 2019 v.25 no.7 pp. 1645-1660
ISSN:
1549-7860
Subject:
case studies; comparative study; concrete; natural gas; occupational health and safety; risk; risk assessment process; uncertainty
Abstract:
... The aim of natural gas pipeline projects is generally to make it possible to transfer the natural gas produced from one place to another. There are various safety risks for these broad construction systems. Therefore, to reduce the negative effects of emerged risks, a new risk assessment approach for occupational health and safety (OHS) is needed. In this paper, FMEA-based AHP-MOORA integrated app ...
DOI:
10.1080/10807039.2018.1546115

11. Assessment of the Effects of Wastewater Treatment Plant Modernization by Means of the Field Olfactometry Method

Author:
Andrzej Kulig; Mirosław Szyłak-Szydłowski
Source:
Water 2019 v.11 no.11 pp. -
ISSN:
2073-4441
Subject:
activated sludge; air; air pollution; concrete; containers; dewatering; modernization; odor compounds; odors; olfactometers; olfactometry; radar; sewage; sewage sludge; sewage treatment; slabs; wastewater treatment
Abstract:
... Methodological aspects of odor studies in ex-post analyses for Polish wastewater management facilities were analyzed based on the example of a modernized and enlarged wastewater treatment plant (WWTP) in Mazovia, in the vicinity of the Warsaw agglomeration. It is a mechanical–biological treatment plant with increased efficiency of biogen removal, using activated sludge in the treatment proce ...
DOI:
10.3390/w11112367

12. Bioassays and Methodologies for Insecticide Tests with Larvae of Trogoderma granarium (Everts), the Khapra Beetle

Author:
Frank H. Arthur; Michael J. Domingue; Deanna S. Scheff; Scott W. Myers
Source:
Insects 2019 v.10 no.5 pp. -
ISSN:
2075-4450
Subject:
Trogoderma granarium; adults; bioassays; concrete; deltamethrin; diapause; larvae; methoprene; pesticide application; piperonyl butoxide; United States
Abstract:
... New insecticide treatment options would be beneficial for control programs for Trogoderma granarium Everts, the khapra beetle, in the United States. Two insecticides were evaluated, the Polyzone® formulation of deltamethrin and a formulation of the insect growth regulator methoprene combined with deltamethrin and the synergist piperonyl butoxide. In the test with Polyzone® deltamethrin, co ...
DOI:
10.3390/insects10050145
PubMed:
31121835
PubMed Central:
PMC6571631

13. Biocalcification by Piezotolerant Bacillus sp. NIOTVJ5 Isolated from Deep Sea Sediment and its Influence on the Strength of Concrete Specimens

Author:
Vijaya Raghavan Rangamaran; Venkat Kumar Shanmugam
Source:
Marine biotechnology 2019 v.21 no.2 pp. 161-170
ISSN:
1436-2228
Subject:
Bacillus thuringiensis; X-ray diffraction; amylases; biofilm; calcite; calcium carbonate; catalase; coasts; compression strength; concrete; crystals; energy-dispersive X-ray analysis; enzyme activity; marine sediments; proteinases; ribosomal RNA; scanning electron microscopy; sequence analysis; spores; urease; Andaman Sea; India
Abstract:
... Biocalcification or microbially induced carbonate precipitation (MICP) is gaining attention from the research fraternity, primarily ascribed to their eco-friendly applications. Bacterial strains have been isolated from various sources and their ability to precipitate carbonate has been studied extensively. In spite of the fact that the deep-sea environment is a potential source for bioprospecting, ...
DOI:
10.1007/s10126-018-9867-8

14. Biochar from residual biomass as a concrete filler for improved thermal and acoustic properties

Author:
Douglas Cuthbertson; Umberto Berardi; Cedric Briens; Franco Berruti
Source:
Biomass and bioenergy 2019 v.120 pp. 77-83
ISSN:
0961-9534
Subject:
absorbance; acoustic properties; biochar; bioenergy industry; biomass; carbon; carbon footprint; carbon sequestration; compression strength; concrete; thermal conductivity
Abstract:
... The current imbalance of carbon in the atmosphere is stimulating the search for carbon sequestration opportunities and for alternative processes and products with a reduced carbon footprint. Biochar, produced from residual biomass of the bio-ethanol industry (Dry Distillers Grains), was added as filler to a standard concrete, aiming at finding potential solutions for simultaneous carbon sequestrat ...
DOI:
10.1016/j.biombioe.2018.11.007

15. Biomineralization of carbonates induced by the fungi Paecilomyces inflatus and Plectosphaerella cucumerina

Author:
Vincenzo Pasquale; Saverio Fiore; Dhaker Hlayem; Antonio Lettino; F. Javier Huertas; Elena Chianese; Stefano Dumontet
Source:
International biodeterioration & biodegradation 2019 v.140 pp. 57-66
ISSN:
0964-8305
Subject:
Paecilomyces; Plectosphaerella; X-ray diffraction; aragonite; biomineralization; bioremediation; calcite; calcium carbonate; concrete; crystals; dolomite; fungi; hyphae; pH; sand; scanning electron microscopy; siderite; soil; straw; vaterite
Abstract:
... The biomineralization of carbonate minerals, such as calcite, vaterite, aragonite, siderite, and dolomite, is an intensively studied phenomenon due to its practical application. This work aimed at studying carbonate-precipitating fungi isolated from a calthemite straw stalactite growing from a concrete ceiling of a building. The isolates were molecularly identified as the ascomycetes Paecilomyces ...
DOI:
10.1016/j.ibiod.2019.03.005

16. Bond strength of eco-friendly class C fly ash-based thermally cured alkali-activated concrete to portland cement concrete

Author:
Eslam Gomaa; Ahmed A. Gheni; Cedric Kashosi; Mohamed A. ElGawady
Source:
Journal of cleaner production 2019 v.235 pp. 404-416
ISSN:
0959-6526
Subject:
adhesion; cement; chemical composition; concrete; curing (nonfood products); durability; fly ash; friction; strength (mechanics); sustainable technology; temperature; United States
Abstract:
... Sixty percent of existing USA bridges were constructed using conventional concrete (CC), i.e., ordinary Portland cement (OPC)-based concrete. Due to aging and changes in standards, many of these bridges require structural repair. To develop engineering-sound repairs, the bond strength between the repair material and existing structure needs to be investigated. This study investigated the bond stre ...
DOI:
10.1016/j.jclepro.2019.06.268

17. Bridging the gap using energy services: Demonstrating a novel framework for soft linking top-down and bottom-up models

Author:
Kristoffer S. Andersen; Lars B. Termansen; Maurizio Gargiulo; Brian P. Ó Gallachóirc
Source:
Energy 2019 v.169 pp. 277-293
ISSN:
0360-5442
Subject:
carbon; carbon sequestration; climate; coal; concrete; energy; issues and policy; macroeconomics; models
Abstract:
... Giving policy advice related to climate mitigation requires insights that take both sectoral and technology effects (and their interactions) into account. This paper develops a novel soft-linking method for bridging the gap between sectoral top-down and technology rich bottom-up models. A unique feature of the approach is the explicit modelling of energy service demand in the top-down model, which ...
DOI:
10.1016/j.energy.2018.11.153

18. Building global change resilience: Concrete has the potential to ameliorate the negative effects of climate-driven ocean change on a newly-settled calcifying invertebrate

Author:
Benjamin Mos; Symon A. Dworjanyn; Lea T. Mamo; Brendan P. Kelaher
Source:
Science of the total environment 2019 v.646 pp. 1349-1358
ISSN:
0048-9697
Subject:
Tripneustes gratilla; adverse effects; bicarbonates; concrete; granite; infrastructure; invertebrates; juveniles; larvae; leaching; ocean acidification; ocean warming; pH; plankton; sea level; seawater; storms; survival rate; temperature
Abstract:
... Global climate change is driving sea level rise and increasingly frequent storm events, which are negatively impacting rapidly-growing coastal communities. To mitigate these impacts, coastal infrastructure must be further protected by upgrading hard defences. We propose that incorporating pH-buffering materials into these upgrades could safeguard marine organisms from the adverse effects of ocean ...
DOI:
10.1016/j.scitotenv.2018.07.379

19. CFD modeling of airflow, thermal environment, and ammonia concentration distribution in a commercial manure-belt layer house with mixed ventilation systems

Author:
Xinjie Tong; Se-Woon Hong; Lingying Zhao
Source:
Computers and electronics in agriculture 2019 v.162 pp. 281-299
ISSN:
0168-1699
Subject:
air; air flow; air temperature; ammonia; autumn; birds; concrete; egg production; environmental factors; farmers; guidelines; heat stress; models; pollutants; poultry housing; poultry manure; risk; risk assessment; seasonal variation; summer; ventilation systems; winter
Abstract:
... Ammonia (NH3) is a major gaseous pollutant in poultry houses and adversely affects production performance and the health of layers and workers. Knowledge of three-dimensional (3D) spatial distribution and seasonal variation of indoor environment inside layer houses is crucial to assess the risks and seek for optimization. This study developed a 3D Computational Fluid Dynamics (CFD) model and simul ...
DOI:
10.1016/j.compag.2019.03.031

20. CONCRETop method: Optimization of concrete with various incorporation ratios of fly ash and recycled aggregates in terms of quality performance and life-cycle cost and environmental impacts

Author:
Rawaz Kurda; Jorge de Brito; José D. Silvestre
Source:
Journal of cleaner production 2019 v.226 pp. 642-657
ISSN:
0959-6526
Subject:
concrete; durability; energy use and consumption; environmental impact; fly ash; global warming; inventories; residential housing
Abstract:
... This study shows how to optimize traditional and non-traditional concrete mixes from various perspectives, specifically technical performance (e.g. mechanical and durability characteristics), and economic (cost) and environmental (e.g. global warming and energy consumption) life cycle. Firstly, the weight to be considered for each of these perspectives (dimensions) of performance depends on the co ...
DOI:
10.1016/j.jclepro.2019.04.070

21. Catalyzing mitigation ambition under the Paris Agreement: elements for an effective Global Stocktake

Author:
Lukas Hermwille; Anne Siemons; Hannah Förster; Louise Jeffery
Source:
Climate policy 2019 v.19 no.8 pp. 988-1001
ISSN:
1752-7457
Subject:
United Nations Framework Convention on Climate Change; accountability; catalysts; catalytic activity; climate; concrete; emissions; environmental policy; governance; information exchange; learning
Abstract:
... The Global Stocktake (GST) takes a central role within the architecture of the Paris Agreement, with many hoping that it will become a catalyst for increased mitigation ambition. This paper outlines four governance functions for an ideal GST: pacemaker, ensurer of accountability, driver of ambition and provider of guidance and signal. The GST can set the pace of progress by stimulating and synchro ...
DOI:
10.1080/14693062.2019.1624494

22. Cement pastes modified with recycled glass and supplementary cementitious materials: Properties at the ambient and high temperatures

Author:
Bo Li; Tung-Chai Ling; Jin-Guang Yu; Jiaqi Wu; Weiwei Chen
Source:
Journal of cleaner production 2019 v.241 pp. -
ISSN:
0959-6526
Subject:
annealing; cement; compression strength; concrete; construction industry; fly ash; glass; pastes; recycling; slags; temperature; wastes; water uptake
Abstract:
... Recycling of glass has attracted great attention in the construction industry since it can be partly utilized as aggregate or pozzolan in cement and concrete. However, high-temperature performance of cement concrete containing waste glass is one of the major concerns for use in building applications. This paper studies the mechanical and high-temperature properties of cement pastes modified with g ...
DOI:
10.1016/j.jclepro.2019.118155

23. Characterization flowchart for assessing the potential reuse of excavation soils in Sao Paulo city

Author:
Karen Kataguiri; Maria Eugênia G. Boscov; Claudia E. Teixeira; Sergio C. Angulo
Source:
Journal of cleaner production 2019 pp. -
ISSN:
0959-6526
Subject:
backfilling; concrete; effluents; gypsum; human health; landfills; pavements; risk; soil; soil sampling; sulfates; urban areas; waste management; Brazil
Abstract:
... Waste management solutions and reuse strategies for excavation soils from construction works are needed to increase the circularity of resources in urban areas. In this study, we assessed some reuse strategies for excavated soils, based on a geotechnical-environmental characterization study conducted with samples from an “inert” construction and demolition waste (CDW) landfill in Sao Paulo city. T ...
DOI:
10.1016/j.jclepro.2019.118215

24. Chemical Properties of Metal-Silicates Rendered by Metal Exchange Reaction

Author:
Roberto C. Longo; Franz Königer; Alexei Nefedov; Peter Thissen
Source:
ACS sustainable chemistry & engineering 2019 v.7 no.9 pp. 8449-8457
ISSN:
2168-0485
Subject:
biological resistance; carbon dioxide; carbonates; cement; concrete; construction materials; corrosion; magnesium; phase transition; physicochemical properties; porosity
Abstract:
... Calcium-silicates and calcium-silicate-hydrates (CS and CSH) are well-known as the most important building material, cement. Both CS and CSH phases react fast with CO₂ from the atmosphere. Due to the porosity of cement and concrete, such reaction goes deep into the material, producing phase transformations, crack formation and propagation. The aim of this work is 2-fold. In the first part, we comp ...
DOI:
10.1021/acssuschemeng.9b00157

25. Class dynamics and ideological construction in the struggle over fairness: a neo-Gramscian examination of the Fairtrade initiative

Author:
Juan Ignacio Staricco
Source:
Journal of peasant studies 2019 v.46 no.1 pp. 96-114
ISSN:
1743-9361
Subject:
certification; concrete; fair trade; politics
Abstract:
... This paper develops a neo-Gramscian conceptual framework in order to examine the ideological constructs and political dynamics that frame the day-to-day workings of the certification-based Fairtrade initiative. To accomplish this goal, the paper resorts to the notion of a ‘comprehensive concept of control’, which accounts for the main ideological elements that constitute the Fairtrade vision of th ...
DOI:
10.1080/03066150.2017.1337003

26. Color Tunable Pigments with High NIR Reflectance in Terbium-Doped Cerate Systems for Sustainable Energy Saving Applications

Author:
Athira K.V. Raj; P. Prabhakar Rao; T. S Sreena
Source:
ACS sustainable chemistry & engineering 2019 v.7 no.9 pp. 8804-8815
ISSN:
2168-0485
Subject:
absorption; barium; ceramics; color; concrete; cooling; dyes; energy; energy conservation; oxidation; pigments; polymers; reflectance; renewable energy sources; strontium; terbium; thermal stability; wavelengths; weather
Abstract:
... Color tunable pigments from yellow to red hues were developed in Tb-doped A₂CeO₄ (A = Sr and Ba) system by the conventional ceramic route. The developed pigments were analyzed for their phase purity, chemical oxidation state, elemental analysis, morphology, and optical properties by various advanced techniques. The Ba substitution in Sr₂–ₓCe₀.₆Tb₀.₄O₄ gently shifts the absorption edge to higher wa ...
DOI:
10.1021/acssuschemeng.9b00737

27. Combined use of waste concrete and glass as a replacement for mortar raw materials

Author:
Viviana Letelier; Bastián I. Henríquez-Jara; Miguel Manosalva; Giacomo Moriconi
Source:
Waste management 2019 pp. -
ISSN:
0956-053X
Subject:
carbon dioxide; cement; concrete; construction industry; durability; glass; greenhouse gas emissions; greenhouse gases; mechanical properties; particle size; raw materials; recycled materials; waste management; wastes
Abstract:
... The construction industry offers one of the most attractive options in the use of recycled materials due to its large consumption of raw materials and high construction work rates. Also, the debris from construction and demolition is responsible for a high participation rate in the generation of waste, with concrete being a major contributor in this category. Waste glass powder, on the other hand, ...
DOI:
10.1016/j.wasman.2019.05.041

28. Comparative LCA of recycled and natural aggregate concrete using Particle Packing Method and conventional method of design mix

Author:
Subhasis Pradhan; B.R. Tiwari; Shailendra Kumar; Sudhirkumar V. Barai
Source:
Journal of cleaner production 2019 v.228 pp. 679-691
ISSN:
0959-6526
Subject:
acidification; cement; computer software; concrete; construction industry; cradle-to-gate; databases; environmental impact; eutrophication; fossil fuels; global warming potential; oxidants; ozone; ozonosphere; photochemistry; raw materials; system boundary; troposphere; wastes
Abstract:
... In construction industry, apart from cement, the aggregate type, mix design method and transport distance of raw materials also contribute significantly to the environment related issues. This paper compares environment impacts of recycled coarse aggregate (RCA) and Particle Packing Method (PPM) of mix design approach with the concrete proportioned using natural coarse aggregate (NCA) and IS code ...
DOI:
10.1016/j.jclepro.2019.04.328

29. Comparative evaluation of sultry indices in the mid-south of Iran

Author:
Peyman Mahmoudi; Taghi Tavousi; Sylwester Wereski; Mahdiye Miri Kamak
Source:
Theoretical and applied climatology 2019 v.137 no.3-4 pp. 3041-3053
ISSN:
0177-798X
Subject:
air temperature; asthma; bioclimatology; breathing; concrete; heat stress; humans; monitoring; qualitative analysis; quantitative analysis; relative humidity; shorelines; vapor pressure; wind speed; Iran
Abstract:
... The sultry phenomenon is considered one of the climactic events of south shorelines of Iran which are associated with humidity and high air temperature. The importance and necessity of this phenomenon on the subject of applied studies especially bioclimatology will be regarded if increasing of its severity leads to human discomfort as well as asthma and hard breathing. The main objective of this s ...
DOI:
10.1007/s00704-018-2742-8

30. Comparative on plant stoichiometry response to agricultural non-point source pollution in different types of ecological ditches

Author:
Junli Wang; Guifa Chen; Guoyan Zou; Xiangfu Song; Fuxing Liu
Source:
Environmental science and pollution research 2019 v.26 no.1 pp. 647-658
ISSN:
1614-7499
Subject:
Vallisneria; agricultural development; concrete; economic plants; ecosystem services; ecosystems; homeostasis; nonpoint source pollution; nutrient availability; nutrient balance; nutrient content; nutrients; soil; stoichiometry; total nitrogen; total phosphorus; wetlands
Abstract:
... Long-term agricultural development has led to agricultural non-point source (NPS) pollution. Ecological ditches (eco-ditch), as specific wetland systems, can be used to manage agricultural NPS water and achieve both ecological and environmental benefits. In order to understand which type of eco-ditch systems (Es, soil eco-ditch; Ec, concrete eco-ditch; Eh, concrete eco-ditch with holes on double-s ...
DOI:
10.1007/s11356-018-3567-9

31. Comparative sustainability assessment of binary blended concretes using Supplementary Cementitious Materials (SCMs) and Ordinary Portland Cement (OPC)

Author:
Kamel Mohamed Rahla; Ricardo Mateus; Luís Bragança
Source:
Journal of cleaner production 2019 v.220 pp. 445-459
ISSN:
0959-6526
Subject:
carbon dioxide; cement; concrete; durability; fly ash; landfills; silica; slags; sustainable manufacturing; wastes
Abstract:
... The process of manufacturing the Ordinary Portland Cement (OPC) is linked with potentially adverse consequences on the environment, as it consumes considerable quantities of resources and releases huge amounts of CO2 to the atmosphere. It is becoming more common to replace some proportion of OPC with by-products from other industries that once were considered as waste and sent to the landfills. Kn ...
DOI:
10.1016/j.jclepro.2019.02.010

32. A Comparison of Three Types of Permeable Pavements for Urban Runoff Mitigation in the Semi-Arid South Texas, U.S.A

Author:
Taufiqul Alam; Ahmed Mahmoud; Kim D. Jones; Juan César Bezares-Cruz; Javier Guerrero
Source:
Water 2019 v.11 no.10 pp. -
ISSN:
2073-4441
Subject:
biochemical oxygen demand; climatic zones; concrete; environmental performance; gravel; pavements; rain; total suspended solids; urban runoff; Texas
Abstract:
... This study examines the hydrologic and environmental performance of three types of permeable pavement designs: Porous Concrete Pavement (PCP), Permeable Interlocking Concrete (PICP), and Interlocking Block Pavement with Gravel (IBPG) in the semi-arid South Texas. Outflow rate, storage, Normalized Volume Reduction (NVR), Normalized Load Reductions (NLR) of Total Suspended Solids (TSS), and Biochemi ...
DOI:
10.3390/w11101992

33. Comprehensive investigation of embodied carbon emissions, costs, design parameters, and serviceability in optimum green construction of two-way slabs in buildings

Author:
Byung Kwan Oh; Branko Glisic; Seol Ho Lee; Tongjun Cho; Hyo Seon Park
Source:
Journal of cleaner production 2019 v.222 pp. 111-128
ISSN:
0959-6526
Subject:
anthropogenic activities; buildings; carbon; carbon dioxide; concrete; design for environment; economic feasibility; environmental impact; greenhouse gas emissions; models; residential housing; slabs; steel; vibration
Abstract:
... This paper presents an optimum design model for the green construction of reinforced concrete two-way slabs in buildings. The model was applied to various design cases of two-way slabs in residential, office, and commercial buildings to derive designs that minimize environmental impact. The sustainability and economic feasibility of the derived designs were extensively compared with those of the c ...
DOI:
10.1016/j.jclepro.2019.03.003

34. Conceptual framework for renovation waste management based on renovation waste generation rates in residential buildings: An empirical study in China

Author:
Zhikun Ding; Wenyan Gong; Vivian W.Y. Tam; I.M. Chethana S. Illankoon
Source:
Journal of cleaner production 2019 v.228 pp. 284-293
ISSN:
0959-6526
Subject:
bricks; ceramics; concrete; empirical research; health hazards; landfills; lumber; residential housing; tiles; toxicity; waste management; wastes; China
Abstract:
... Renovation of residential buildings is very common in China. Parallel to the renovations, a significant of renovation waste is generated, majority of which end up in landfills posing significant environmental and health hazards. Approximately up to 7.5 million tons of renovation waste is generated annually in China, yet, there is a clear lack of research on renovation waste management. A framework ...
DOI:
10.1016/j.jclepro.2019.04.153

35. Concrete containing low-sulphide waste rocks as fine and coarse aggregates: Preliminary assessment of materials

Author:
Y. Benarchid; Y. Taha; R. Argane; A. Tagnit-Hamou; M. Benzaazoua
Source:
Journal of cleaner production 2019 v.221 pp. 419-429
ISSN:
0959-6526
Subject:
X-ray diffraction; X-ray fluorescence spectroscopy; automation; concrete; construction materials; guidelines; leaching; mining; recycling; rocks; scanning electron microscopy; sustainable development; toxicity; wastes; Quebec
Abstract:
... The reuse of mining waste-rocks as construction material constitutes an innovative management approach consistent with the principles of sustainable development. Nevertheless, the implementation of this approach is still limited by most guidelines due principally to insufficient knowledge of these materials performances and to unjustified presumptions related to their chemical instability (presenc ...
DOI:
10.1016/j.jclepro.2019.02.227

36. Construction waste generation estimates of institutional building projects: Leveraging waste hauling tickets

Author:
Amal Bakchan; Kasey M. Faust
Source:
Waste management 2019 v.87 pp. 301-312
ISSN:
0956-053X
Subject:
buildings; concrete; construction industry; data collection; energy; finishing; greenhouse gas emissions; recycling; socioeconomic factors; streams; trees; wastes; wood
Abstract:
... The large proportions of waste generated from the construction industry have led to adverse environmental and socio-economic impacts, and as such, there is a need to promote construction waste management (CWM) practices. However, there is limited information regarding construction waste (CW) generated from nonresidential buildings available to support such CWM practices. This study seeks to quanti ...
DOI:
10.1016/j.wasman.2019.02.024

37. Contact Guidance by Microstructured Gelatin Hydrogels for Prospective Tissue Engineering Applications

Author:
Meike Tadsen; Ralf P. Friedrich; Stefanie Riedel; Christoph Alexiou; Stefan G. Mayr
Source:
ACS applied materials & interfaces 2019 v.11 no.7 pp. 7450-7458
ISSN:
1944-8252
Subject:
biocompatibility; biocompatible materials; biodegradability; biomimetics; body temperature; concrete; crosslinking; fibroblasts; gelatin; human umbilical vein endothelial cells; hydrogels; irradiation; medicine; thermal stability; tissue engineering; topography
Abstract:
... Design of functionalized biomimetic scaffolds is one of the key approaches for regenerative medicine and other biomedical applications. Development of engineered tissue should optimize organization and function of cells and tissue in vitro as well as in vivo. Surface topography is one factor controlling cellular behavior and tissue development. By topographical patterning of biocompatible material ...
DOI:
10.1021/acsami.8b21638

38. Contact toxicity of filter cake and Triplex powders from Ethiopia against Sitophilus oryzae

Author:
Tesfaye Melak Tadesse; Bhadriraju Subramanyam; Kun Yan Zhu; James F. Campbell
Source:
Journal of stored products research 2019 v.80 pp. 34-40
ISSN:
0022-474X
Subject:
Sitophilus oryzae; adults; concrete; filter cake; insects; lethal concentration 50; median effective concentration; mortality; powders; progeny; seeds; toxicity; weight loss; Ethiopia
Abstract:
... Contact toxicity of filter cake and Triplex powders from Ethiopia were evaluated against the rice weevil, Sitophilus oryzae (Linnaeus). The study was aimed at determining the lethal and effective concentrations and times for both powders against S. oryzae. The lethal concentrations for 50 and 99% mortality (LC50 and LC99) of filter cake and Triplex against S. oryzae were determined at 14 d after e ...
DOI:
10.1016/j.jspr.2018.11.005

39. Corrosion of reinforcing steel in concrete sewers

Author:
Yarong Song; Elaine Wightman; Yimei Tian; Kevin Jack; Xuan Li; Huiyun Zhong; Philip L. Bond; Zhiguo Yuan; Guangming Jiang
Source:
Science of the total environment 2019 v.649 pp. 739-748
ISSN:
0048-9697
Subject:
X-ray diffraction; concrete; corrosion; hydrogen sulfide; ions; iron oxides; models; prediction; sewage systems; steel; sulfuric acid
Abstract:
... Hydrogen sulfide is a controlling factor for concrete corrosion in sewers, although its impact on sewer rebar corrosion has not been investigated to date. This study determined the corrosion mechanism of rebar in sewers by elucidating the roles of chloride ions, apart from the effects of hydrogen sulfide and biogenic sulfuric acid. The nature and distribution of rusts at the steel/concrete interfa ...
DOI:
10.1016/j.scitotenv.2018.08.362

40. Cost efficiency of district heating for low energy buildings of the future

Author:
C.H. Hansen; O. Gudmundsson; N. Detlefsen
Source:
Energy 2019 v.177 pp. 77-86
ISSN:
0360-5442
Subject:
buildings; concrete; cost effectiveness; energy; heat; heating systems; renewable energy sources; Europe
Abstract:
... Projects like the 4DH research platform and Heat Roadmap Europe have successfully demonstrated that district heating is the only viable solution to efficiently utilize both low-grade renewable energy, excess heat from other sources as well as waste heat for providing heat for space heating and domestic hot water purposes. Nevertheless, there are open questions regarding cost competitiveness of dis ...
DOI:
10.1016/j.energy.2019.04.046

41. Coupling components and services for integrated environmental modelling

Author:
Fan Gao; Peng Yue; Chenxiao Zhang; Mi Wang
Source:
Environmental modelling & software 2019 v.118 pp. 14-22
ISSN:
1364-8152
Subject:
algorithms; computers; concrete; environmental models; world wide web
Abstract:
... Integrated environmental modelling (IEM) couples environmental models, geoprocessing algorithms, and data together to solve complex environmental problems. There are two prominent modelling frameworks for IEM: component-based and service-oriented frameworks. The former one has been widely employed in local computer environments, and has its advantage in having concrete and community-wide tools. Th ...
DOI:
10.1016/j.envsoft.2019.04.003

42. Coupling of urban energy balance model with 3-D radiation model to derive human thermal (dis)comfort

Author:
Sandro M. Oswald; Michael Revesz; Heidelinde Trimmel; Philipp Weihs; Shokufeh Zamini; Astrid Schneider; Martin Peyerl; Stefan Krispel; Harald E. Rieder; Erich Mursch-Radlgruber; Fredrik Lindberg
Source:
International journal of biometeorology 2019 v.63 no.6 pp. 711-722
ISSN:
0020-7128
Subject:
air temperature; bioclimatology; bitumen; climate models; concrete; energy balance; geometry; glass; heat island; humans; light intensity; prediction; soil quality; solar collectors; surface temperature; variance
Abstract:
... While capabilities in urban climate modeling have substantially increased in recent decades, the interdependency of changes in environmental surface properties and human (dis)comfort have only recently received attention. The open-source solar long-wave environmental irradiance geometry (SOLWEIG) model is one of the state-of-the-art models frequently used for urban (micro-)climatic studies. Here, ...
DOI:
10.1007/s00484-018-1642-z

43. Crushed Autoclaved Aerated Concrete (CAAC), a Potential Reactive Filter Medium for Enhancing Phosphorus Removal in Nature-Based Solutions—Preliminary Batch Studies

Author:
Joana América da Cunha Castellar; Joan Formosa; Josep Maria Chimenos; Joan Canals; Montserrat Bosch; Joan Ramon Rosell; Heraldo Peixoto da Silva; Jordi Morató; Hans Brix; Carlos Alberto Arias
Source:
Water 2019 v.11 no.7 pp. -
ISSN:
2073-4441
Subject:
acidification; adsorption; autoclaving; byproducts; concrete; data collection; eutrophication; kinetics; oceans; particle size; phosphorus; statistical analysis; streams; wastewater
Abstract:
... Phosphorus (P) is a limited resource and can promote eutrophication of water streams and acidification of oceans when discharged. Crushed autoclaved aerated concrete (CAAC), a by-product from demolition, has shown great potential for recovering P. The potential of CAAC to be used in nature-based solutions as a P-reactive filter medium was evaluated by performing preliminary batch essays. Here, we ...
DOI:
10.3390/w11071442

44. DEM analyses of rock block shape effect on the response of rockfall impact against a soil buffering layer

Author:
Weigang Shen; Tao Zhao; Feng Dai; Mingjing Jiang; Gordon G.D. Zhou
Source:
Engineering geology 2019 v.249 pp. 60-70
ISSN:
0013-7952
Subject:
concrete; energy; mathematical models; rockfalls; soil buffering capacity
Abstract:
... This study investigates the mechanism of rockfall impact against a granular soil buffering layer above a concrete/rock shed via numerical simulations by discrete element method (DEM). The soil buffering layer is modeled as a loose packing of polydisperse spherical particles, while the bottom concrete/rock shed is simulated by a layer of fixed particles. The rock blocks of various ellipsoidal shape ...
DOI:
10.1016/j.enggeo.2018.12.011

45. Data on the coefficient of static friction between surfaces coated with different sizes of rubber granules produced from used tires

Author:
Ehab Hussein Bani-Hani; Jessica Lopez; Girish Mohanan
Source:
Data in Brief 2019 v.22 pp. 940-945
ISSN:
2352-3409
Subject:
abrasives; ceramics; concrete; friction; glass; poly(vinyl chloride); rubber; wood
Abstract:
... The data on the static friction coefficient (µ) resulting between a surface and a friction block covered with shredded rubber produced from used commercial tires at varying granule sizes are presented. The tests are done using different types of plates such as, glass, Poly Vinyl Chloride (PVC) plastics, wood, concrete, marble, ceramic and sand paper to represent rough and smooth surfaces in contac ...
DOI:
10.1016/j.dib.2019.01.022

46. Design and Analysis of a UWB MIMO Radar System with Miniaturized Vivaldi Antenna for Through-Wall Imaging

Author:
Zhipeng Hu; Zhaofa Zeng; Kun Wang; Weike Feng; Jianmin Zhang; Qi Lu; Xiaoqian Kang
Source:
Remote Sensing 2019 v.11 no.16 pp. -
ISSN:
2072-4292
Subject:
air; algorithms; bricks; concrete; humans; image analysis; models; radar; remote sensing
Abstract:
... The ultra-wideband (UWB) multi-input multi-output (MIMO) radar technique is playing a more and more important role in the application of through-wall detection because of its high resolution, lower antenna requirements, and efficient data capturing ability. This paper develops a novel UWB MIMO radar system using a stepped-frequency continuous-wave (SFCW) signal, which is designed to detect human t ...
DOI:
10.3390/rs11161867

47. Designing the incineration process for improving the cementitious performance of sewage sludge ash in Portland and blended cement systems

Author:
Maria Oliva; Felipe Vargas; Mauricio Lopez
Source:
Journal of cleaner production 2019 v.223 pp. 1029-1041
ISSN:
0959-6526
Subject:
cement; compression strength; concrete; experimental design; greenhouse gases; landfills; mechanical properties; micropores; particle size distribution; sewage; sewage sludge; sludge ash; surface area; temperature
Abstract:
... Currently, there is little doubt that the global temperature increase is a consequence of the concentrations of manmade greenhouse gases. Sustainable alternatives such as the use of supplementary cementitious materials and the reduction of sanitary landfills through the incineration of sewage sludge hold promise for the reduction of these gases.An experimental design is proposed to make the incine ...
DOI:
10.1016/j.jclepro.2019.03.147

48. Detailed characterization of particle size fractions of municipal solid waste incineration bottom ash

Author:
E. Loginova; D.S. Volkov; P.M.F. van de Wouw; M.V.A. Florea; H.J.H. Brouwers
Source:
Journal of cleaner production 2019 v.207 pp. 866-874
ISSN:
0959-6526
Subject:
bottom ash; chlorides; concrete; construction materials; elemental composition; environmental law; leaching; municipal solid waste; particle size; recipes; sulfates; toxic substances; waste incineration; Netherlands
Abstract:
... Municipal Solid Waste Incineration Bottom Ash (MSWI BA) is of increasing interest as a secondary construction material worldwide. In most cases, MSWI BA is used in isolated conditions. However, according to the Dutch Green Deal B-076 in 2012, by 2020 all MSWI BA should be used in a non-sealed environment in the Netherlands. However, freshly produced. MSWI BA normally does not match environmental l ...
DOI:
10.1016/j.jclepro.2018.10.022

49. Development of Ca2+-based, ion-responsive superabsorbent hydrogel for cement applications: Self-healing and compressive strength

Author:
Miaomiao Hu; Jintang Guo; Jiangbo Du; Zhenxing Liu; Pengpeng Li; Xiangkui Ren; Yakai Feng
Source:
Journal of colloid and interface science 2019 v.538 pp. 397-403
ISSN:
0021-9797
Subject:
absorption; adsorption; calcium; calcium silicate; cement; compression strength; concrete; crosslinking; desorption; hydrogels; mechanical properties; mixing; sodium alginate; sodium silicate; super absorbent polymers; swelling (materials)
Abstract:
... Superabsorbent polymers (SAPs) are broadly applied in cement and concrete. However, the increased macrovoids resulting from the absorption/desorption of SAPs, remarkably reduced the resulting mechanical properties. In this study, we prepared superabsorbent CaAlg hydrogels by crosslinking Ca²⁺ and sodium alginate (NaAlg). The ion-responsive behavior of CaAlg was measured, and results showed at lowe ...
DOI:
10.1016/j.jcis.2018.12.004

50. Development of a measurement method for abrasion irrigation channel using underwater ultrasonic wave

Author:
Seiya Nagaoka; Kenji Okajima; Ryoei Ito; Ken Watanabe; Mohammad Raihanul Islam
Source:
Paddy and water environment 2019 v.17 no.3 pp. 549-554
ISSN:
1611-2490
Subject:
concrete; irrigation canals; roughness; sand; ultrasonics; water flow; Japan
Abstract:
... Japan has many concrete irrigation channels with total length of about 400,000 km. Most of these channels are now too old for continued use. It would be too costly to reconstruct these channels. The concrete surfaces of the channels have been abraded by the flow of water and sand. The roughness of the concrete surface causes a decline in the water flow function. Over the years, considerable attent ...
DOI:
10.1007/s10333-019-00751-0

51. Development of a sustainable and innovant hygrothermal bio-composite featuring the enhanced mechanical properties

Author:
Muhammad Riaz Ahmad; Bing Chen; M. Aminul Haque; Syed Farasat Ali Shah
Source:
Journal of cleaner production 2019 v.229 pp. 128-143
ISSN:
0959-6526
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; absorption; biocomposites; cement; compression strength; concrete; corn stover; energy efficiency; image analysis; insulating materials; mechanical properties; relative humidity; scanning electron microscopy; temperature; thermal properties; water uptake
Abstract:
... In this study, machine controlled high compaction force was used to produce an innovant, sustainable and energy efficient bio-composite based on magnesium phosphate cement (MPC) as binder and corn stalk as bio-aggregate. Characterization of corn stalk was investigated by water absorption, image processing, scanning electron microscopy (SEM), x-ray diffraction (XRD) and Fourier transform infrared s ...
DOI:
10.1016/j.jclepro.2019.05.002

52. Development of ammonia mass transfer coefficient models for the atmosphere above two types of the slatted floors in a pig house using computational fluid dynamics

Author:
L. Rong; A.J.A. Aarnink
Source:
Biosystems engineering 2019 v.183 pp. 13-25
ISSN:
1537-5110
Subject:
adverse effects; air flow; ammonia; animal production; barns; concrete; cost effectiveness; emissions; emissions factor; floors; issues and policy; laboratory experimentation; mass transfer; mathematical models; production technology; swine; swine housing; ventilation systems; volatilization; wind tunnels
Abstract:
... Ammonia emissions from animal production systems are a concern due to their potential adverse effects on the environment. It is important for governments to adjust their policies to control ammonia emissions from animal production. To evaluate and quantify emission factors, process-based modelling is a cost-effective procedure, particularly due to the complex and diverse transfer chains. During th ...
DOI:
10.1016/j.biosystemseng.2019.04.011

53. Development of seismic vulnerability index methodology for reinforced concrete buildings based on nonlinear parametric analyses

Author:
Moustafa Moffed Kassem; Fadzli Mohamed Nazri; Ehsan Noroozinejad Farsangi
Source:
MethodsX 2019 v.6 pp. 199-211
ISSN:
2215-0161
Subject:
analytical methods; buildings; concrete; earthquakes; expert opinion; geophysics; models; risk assessment; screening
Abstract:
... This paper presents a simplified method in the seismic vulnerability assessment of reinforced concrete (RC) buildings based on proposed seismic vulnerability index (SVI) methodology. The employed procedure is derived with some modifications from the Italian GNDT and the European Macro-seismic approaches. Eight parameters were modeled in three distinct vulnerability classes to estimate the vulnerab ...
DOI:
10.1016/j.mex.2019.01.006
PubMed:
30766800
PubMed Central:
PMC6360609

54. Digitization in wood supply – A review on how Industry 4.0 will change the forest value chain

Author:
Fabian Müller; Dirk Jaeger; Marc Hanewinkel
Source:
Computers and electronics in agriculture 2019 v.162 pp. 206-218
ISSN:
0168-1699
Subject:
Internet; computer vision; concrete; decision support systems; forestry; forests; industry; labor; planning; postharvest technology; research and development; sales; simulation models; socioeconomics; spatial data; supply chain; trees; wood
Abstract:
... The term Industry 4.0 (I 4.0) has been shaping the discussion about increasing digitization in industrial and service value chains for several years. The concepts and technologies driving the fourth industrial revolution are increasingly moving to focus on forestry’s practice and research. They both are attempting to develop new solutions for the forestry sector by taking advantage of technologica ...
DOI:
10.1016/j.compag.2019.04.002

55. Discussion on the Reinforcement of Reinforced Concrete Slab Structures

Author:
Wei-Ling Hsu; Chen-Chung Liu; Yan-Chyuan Shiau; Wen-Chin Lin
Source:
Sustainability 2019 v.11 no.6 pp. -
ISSN:
2071-1050
Subject:
buildings; carbon; carbon dioxide; carbon fibers; case studies; chlorides; concrete; corrosion; durability; earthquakes; emissions; energy conservation; environmental impact; environmental protection; epoxides; ions; maintenance and repair; oxidation; plastics; salt content; steel; sustainable development; viscosity; Taiwan
Abstract:
... Because of global environmental changes and the continued warming of the planet, the increase in carbon dioxide emissions has had a major impact on the environment. The development of zero-carbon buildings, the promotion of energy conservation and carbon reduction, and the concept of green environmental protection are regarded as important issues for humanity to achieve sustainable development. In ...
DOI:
10.3390/su11061756

56. Dismantling of the DIORIT research reactor - Conditioning of activated graphite

Author:
Isabel Cecilia Sierra Perler; Hans-Frieder Beer; Joachim Müth; Andreas Kramer
Source:
Journal of environmental radioactivity 2019 v.196 pp. 199-203
ISSN:
0265-931X
Subject:
concrete; containers; deuterium oxide; graphene; particle size; radioactivity; sand; uranium; wastes
Abstract:
... The research reactor DIORIT at the Paul Scherrer Institute was a natural uranium reactor moderated by D₂O. It was put in operation in 1960 and finally shut down in August 1977. The dismantling project started in 1982 and could be successfully finished on September 11th, 2012. About 40 tons of activated reactor graphite had to be conditioned during the dismantling of this research reactor. The prob ...
DOI:
10.1016/j.jenvrad.2017.07.019

57. Distinct microbially induced concrete corrosion at the tidal region of reinforced concrete sewers

Author:
Yarong Song; Yimei Tian; Xuan Li; Jing Wei; Haiya Zhang; Philip L. Bond; Zhiguo Yuan; Guangming Jiang
Source:
Water research 2019 v.150 pp. 392-402
ISSN:
0043-1354
Subject:
Mycobacterium; analytical methods; bacteria; concrete; corrosion; durability; genes; gypsum; microbial communities; monitoring; pH; ribosomal RNA; sewage systems; sulfuric acid; wastewater
Abstract:
... Microbially induced concrete corrosion (MICC) is a major deterioration affecting sewers worldwide. MICC is not uniform on sewer inner walls and often occurs at hot spots such as crown and tidal regions, which are critical to determine sewer service life. Especially, concrete corrosion in tidal regions is complicated due to the fluctuation of wastewater levels and the hydraulic scouring effects. Th ...
DOI:
10.1016/j.watres.2018.11.083

58. Does the exposure of parental female adults of the invasive Trogoderma granarium Everts to pirimiphos-methyl on concrete affect the morphology of their adult progeny? A geometric morphometric approach

Author:
Maja Lazarević; Nickolas G. Kavallieratos; Erifili P. Nika; Maria C. Boukouvala; Anna Skourti; Vladimir Žikić; Nikos E. Papanikolaou
Source:
Environmental science and pollution research international 2019 v.26 no.34 pp. 35061-35070
ISSN:
0944-1344
Subject:
Trogoderma granarium; active ingredients; concrete; deformation; elytra; females; imagos; insecticide resistance; insects; invasive species; morphometry; pirimiphos-methyl; progeny
Abstract:
... Insecticidal applications may result to morphological deformations upon exposed insects or their offspring production. In the present study, we tested whether pirimiphos-methyl can induce deformities to wings of progeny production of the invasive khapra beetle, Trogoderma granarium (Coleoptera: Dermestidae) when its parental female adults have been treated with this organophosphorus active ingredi ...
DOI:
10.1007/s11356-019-06120-y

59. Durability of Recycled Steel Fiber Reinforced Concrete in Chloride Environment

Author:
Cristina M. V. Frazão; Joaquim A. B. Barros; J. Alexandre Bogas
Source:
Fibers 2019 v.7 no.12 pp. -
ISSN:
2079-6439
Subject:
chlorides; concrete; corrosion; durability; fiber content; ions; long term effects; prediction; steel
Abstract:
... For structural elements exposed to chloride environments, an important aspect of Recycled Steel Fiber Reinforced Concrete (RSFRC) durability is the corrosion resistance. In the present work, an experimental program was carried out to evaluate the long-term effects of chloride attack on the post-cracking behavior of RSFRC by performing splitting tensile tests and round panel tests. Two RSFRC mixtur ...
DOI:
10.3390/fib7120111

60. Eco-efficiency assessment of technological innovations in high-grade concrete recycling

Author:
Chunbo Zhang; Mingming Hu; Liang Dong; Abraham Gebremariam; Brenda Miranda-Xicotencatl; Francesco Di Maio; Arnold Tukker
Source:
Resources, conservation, and recycling 2019 v.149 pp. 649-663
ISSN:
0921-3449
Subject:
European Union; air; analytical methods; backfilling; concrete; decision making; eco-efficiency; economic development; economic evaluation; heat; issues and policy; life cycle assessment; life cycle costing; manufacturing; recycling; value added; wastes; Europe
Abstract:
... The increasing volume of Construction and demolition waste (CDW) associated with economic growth is posing challenges to the sustainable management of the built environment. The largest fraction of all the CDW generated in the member states of the European Union (EU) is End-of-life (EOL) concrete. The most widely applied method for EOL concrete recovery in Europe is road base backfilling, which is ...
DOI:
10.1016/j.resconrec.2019.06.023

61. Eco-engineering increases habitat availability and utilisation of seawalls by fish

Author:
S. Ushiama; M. Mayer-Pinto; A.B. Bugnot; E.L. Johnston; K.A. Dafforn
Source:
Ecological engineering 2019 pp. -
ISSN:
0925-8574
Subject:
concrete; ecosystems; fish communities; fish feeding; fouling; habitat preferences; habitats; homogenization; humans; infrastructure; oysters; pelagic fish; sowing; species diversity; tiles
Abstract:
... The replacement of natural marine habitats with less structurally complex human infrastructure has been linked to the homogenisation of epibenthic assemblages and associated changes in fish assemblages. To mitigate these impacts, eco-engineering efforts have focussed on increasing the physical and biogenic complexity of artificial structures, in the form of crevices added to seawalls and the seedi ...
DOI:
10.1016/j.ecoleng.2019.07.022

62. Ecofriendly calcium phosphate and calcium bicarbonate biogrouts

Author:
Volodymyr Ivanov; Viktor Stabnikov; Satoru Kawasaki
Source:
Journal of cleaner production 2019 v.218 pp. 328-334
ISSN:
0959-6526
Subject:
acid tolerance; air; ammonia; ammonium; bacteria; biotechnology; byproducts; calcium bicarbonate; calcium carbonate; calcium chloride; carbon dioxide; chalk; concrete; dissolved calcium; environmental engineering; hydraulic conductivity; hydroxyapatite; liquids; pH; porosity; seepage; toxicity; urea; urease
Abstract:
... An important direction of construction biotechnology is production and application of the biogrouts to decrease the hydraulic conductivity of soil or fractured rocks. The most popular biogrout is a mixture of calcium chloride, urea, and either ureolytic bacteria or enzyme urease. A disadvantage of this biogrout is the release of a large quantity of toxic ammonia to air, as well as harmful ammonium ...
DOI:
10.1016/j.jclepro.2019.01.315

63. Ecological and taxonomic characterisation of Trentepohlia umbrina (Kützing) Bornet growing on stone surfaces in Lazio (Italy)

Author:
Flavia Bartoli; Neil Thomas William Ellwood; Laura Bruno; Simona Ceschin; Lorenza Rugnini; Giulia Caneva
Source:
Annals of microbiology 2019 v.69 no.10 pp. 1059-1070
ISSN:
1590-4261
Subject:
Gloeocapsa; Trentepohlia; altitude; autotrophs; biofilm; coasts; concrete; construction materials; geographical distribution; humidity; temperate zones; Italy
Abstract:
... PURPOSE: The colonisation of building material by photosynthetic organisms is highly dependent on the environmental conditions and the nature of the substrate. The growths of red-orange phototrophic biofilms have been widely reported in the literature and have commonly been associated with the order Trentepohliales, whose ecological and taxonomical information needs to be improved. Considering the ...
DOI:
10.1007/s13213-019-01472-9

64. Effect of Cyclic Damage on the Performance of RC Square Columns Strengthened Using Hybrid FRP Composites under Axial Compression

Author:
M. Chellapandian; Saumitra Jain; S. Suriya Prakash; Akanshu Sharma
Source:
Fibers 2019 v.7 no.10 pp. -
ISSN:
2079-6439
Subject:
carbon; concrete; fabrics; finite element analysis; models; polymers; prediction
Abstract:
... The effectiveness of hybrid fibre-reinforced polymer (FRP) strengthening is evaluated for rapid repair of the pre-damaged plain concrete (PC) and reinforced concrete (RC) columns. The objective of this study is to understand the efficiency of hybrid technique for completely restoring the initial stiffness, load carrying capacity and ductility of pre-damaged columns under cyclic compression loads. ...
DOI:
10.3390/fib7100090

65. The Effect of Pervious Concrete on Water Quality Parameters: A Case Study

Author:
Brent S. Pilon; John S. Tyner; Daniel C. Yoder; John R. Buchanan
Source:
Water 2019 v.11 no.2 pp. -
ISSN:
2073-4441
Subject:
aquatic habitat; bitumen; case studies; chemical oxygen demand; concrete; drinking water; nitrites; pH; pavements; pollutants; pollution control; polycyclic aromatic hydrocarbons; stormwater; sulfates; surface water; total suspended solids; water pollution; water quality; zinc
Abstract:
... Stormwater is a leading source of pollutants that when transported to surface waters may damage aquatic habitat, decrease reservoir capacity, and contaminate drinking water. In order to evaluate whether a pervious concrete detention system can remove stormwater pollutants from the runoff, water quality was monitored at a site with both impervious asphalt and pervious concrete parking areas. The st ...
DOI:
10.3390/w11020263

66. Effect of Recycled Plastic Granules as a Partial Substitute for Natural Resource Sand on the Durability of SCC

Author:
Bala Rama Krishna Chunchu; Jagadeesh Putta
Source:
Resources 2019 v.8 no.3 pp. -
ISSN:
2079-9276
Subject:
cement; concrete; durability; fly ash; granules; hydrophobicity; microstructure; polystyrenes; porosity; recycled plastic; sand; wastes; water uptake
Abstract:
... This investigation is focused on durability studies of binary blended self-compacting concrete (SCC) with the replacement effect of electronic plastic waste, namely high-impact polystyrene (HIPS) granules as partial sand. In the current investigation, for all the SCC mixes, cement is replaced with pozzolanic material fly ash in the binder content of 497 kg/m3 and an adopted water-to-binder ratio o ...
DOI:
10.3390/resources8030133

67. The Effect of Shrinkage-Compensation on the Performance of Strain-Hardening Cement Composite (SHCC)

Author:
Seok-Joon Jang; Ji-Hyeon Kim; Sun-Woo Kim; Wan-Shin Park; Hyun-Do Yun
Source:
Sustainability 2019 v.11 no.5 pp. -
ISSN:
2071-1050
Subject:
calcium; cement; compression strength; concrete; cracking; durability; infrastructure; modulus of rupture; shrinkage; tensile strength
Abstract:
... This study investigated the effects of shrinkage compensation on the tensile and cracking responses of strain-hardening cement composite (SHCC) by adding calcium sulfoaluminate (CSA)-based expansive additive (EXA) to the mixture. Such responses are closely related to the durability of concrete structures, of dumbbell-shaped SHCC specimens, and reinforced SHCC ties. For this study, two SHCC mixture ...
DOI:
10.3390/su11051453

68. Effect of Tiles, Bricks and Ceramic Sanitary-Ware Recycled Aggregates on Structural Concrete Properties

Author:
A. M. Pitarch; L. Reig; A. E. Tomás; F. J. López
Source:
Waste and biomass valorization 2019 v.10 no.6 pp. 1779-1793
ISSN:
1877-2641
Subject:
ambient temperature; bricks; ceramics; clay; compression strength; concrete; limestone; mechanical properties; tiles; wastes
Abstract:
... In this paper, tile ceramic waste (TCW), red clay bricks (RCB) and ceramic sanitaryware (CSW) were used as the partial replacement (14–30 wt%) of natural limestone aggregates to produce structural concrete. The natural and recycled aggregates were characterised, and the strength and density of the hardened concrete were investigated after 7 and 28 curing days at room temperature. The TCW concrete ...
DOI:
10.1007/s12649-017-0154-0

69. Effect of carbonated coarse recycled concrete aggregate on the properties and microstructure of recycled concrete

Author:
Bao Lu; Caijun Shi; Zhijie Cao; Mingzhi Guo; Jianlan Zheng
Source:
Journal of cleaner production 2019 v.233 pp. 421-428
ISSN:
0959-6526
Subject:
carbonation; cement; compression strength; concrete; drying; microstructure; porosity; shrinkage; water uptake
Abstract:
... The effects of carbonated coarse recycled concrete aggregate (RCA) on properties and microstructure of recycled aggregate concrete (RAC) were investigated in this study. The water absorption of 5–10 mm and 10–20 mm coarse RCA was reduced by 30% and 22%, and their corresponding apparent density increased by 4.8% and 3.2% after carbonation treatment. The compressive strength of the concrete with 50% ...
DOI:
10.1016/j.jclepro.2019.05.350

70. Effect of environmental temperature, floor type and breed on skatole and indole concentrations in fat of females, immuno-castrated and entire males

Author:
Antoni Dalmau; Tâmara Duarte Borges; Eduardo de Mercado; Joel González; Aranzazu Mateos-San Juan; Mariana Huerta-Jiménez; Emilio Gómez-Izquierdo; Rosil Lizardo; Joaquim Pallisera; Francesc Borrisser-Pairó; Enric Esteve-Garcia; Nuria Panella-Riera; Ismael Ovejero
Source:
Livestock science 2019 v.220 pp. 46-51
ISSN:
1871-1413
Subject:
Duroc; Pietrain; ambient temperature; concrete; crossbreds; females; floors; heat; heat stress; males; sires; skatole; swine
Abstract:
... The present study was divided in two different trials. The aim of the first trial was to determine if the thresholds of detection of skatole and indole are achieved in females and in males vaccinated against the GnRF housed in two different type of floors and subject to control or high environmental temperatures. The aim of the second trial was to assess the effect of sire (Duroc crossbreed and Pi ...
DOI:
10.1016/j.livsci.2018.11.021

71. Effect of ginger extract as green inhibitor on chloride-induced corrosion of carbon steel in simulated concrete pore solutions

Author:
Yongqi Liu; Zijian Song; Wanyi Wang; Linhua Jiang; Yingjie Zhang; Mingzhi Guo; Fengyan Song; Na Xu
Source:
Journal of cleaner production 2019 v.214 pp. 298-307
ISSN:
0959-6526
Subject:
Fourier transform infrared spectroscopy; X-ray photoelectron spectroscopy; carbon; chemical bonding; concrete; corrosion; electrochemistry; electrodes; ginger; liquid chromatography; mass spectrometry; phenolic compounds; steel
Abstract:
... In this study, we tried to employ the ginger extract as an environmentally friendly inhibitor to improve chloride-induced corrosion resistance of reinforcing steel in simulated concrete pore solutions. The inhibiting performances of ginger extract as well as three other inhibiting systems were studied by stereo-microscope and various electrochemical measures. The main phenolic compounds of ginger ...
DOI:
10.1016/j.jclepro.2018.12.299

72. Effect of glass aggregates and coupling agent on the mechanical behaviour of polymeric glass composite

Author:
Heriyanto; Farshid Pahlevani; Veena Sahajwalla
Source:
Journal of cleaner production 2019 v.227 pp. 119-129
ISSN:
0959-6526
Subject:
compression strength; concrete; deformation; ecosystem services; glass; mechanical properties; mixing; polymers; scanning electron microscopes; silane; surface area; wastes; wettability
Abstract:
... This study is the second in a series of papers on synthesizing polymeric glass composite (PGC) panels (Heriyanto, 2018) from mixed, contaminated and broken glasses that are not being recycled at present. The first series of the paper covered the composite production from powder glass, resin and coupling agent as well as investigated the mechanical properties of the powder-resin composite. In Part ...
DOI:
10.1016/j.jclepro.2019.04.152

73. Effect of incorporation of metakaolin and recycled coarse aggregate on properties of concrete

Author:
Rakesh Muduli; Bibhuti Bhusan Mukharjee
Source:
Journal of cleaner production 2019 v.209 pp. 398-414
ISSN:
0959-6526
Subject:
cement; compression strength; concrete; modulus of rupture; tensile strength; ultrasonics; wastes; water uptake
Abstract:
... The present research work investigates the utilization of metakaolin as a mineral admixture in improving the properties of concrete mixes, containing varying percentages of recycled coarse aggregates (RCA). For this, fifteen concrete mixes have been designed by substituting natural coarse aggregates (NCA) with 0%, 50% and 100% RCA and cement with 0%, 5%, 10%, 15% and 20% metakaolin. Nine different ...
DOI:
10.1016/j.jclepro.2018.10.221

74. Effect of photocatalytic Fe2O3 nanoparticles on urban runoff pollutant removal by permeable concrete

Author:
Rosangel Ortega-Villar; Liliana Lizárraga-Mendiola; Claudia Coronel-Olivares; Luis D. López-León; Carlos Alfredo Bigurra-Alzati; Gabriela A. Vázquez-Rodríguez
Source:
Journal of environmental management 2019 v.242 pp. 487-495
ISSN:
0301-4797
Subject:
Aeromonas hydrophila; Enterococcus faecalis; Escherichia coli; Pseudomonas aeruginosa; X-ray photoelectron spectroscopy; ammonium; ammonium nitrogen; cement; compression strength; concrete; decontamination; energy-dispersive X-ray analysis; ferric oxide; hydraulic conductivity; iron; lead; manganese; nanoparticles; nitrate nitrogen; oxidation; pavements; phenol; phosphates; photocatalysis; physicochemical properties; pollutants; pollution control; scanning electron microscopy; traffic; urban runoff; water quality
Abstract:
... Permeable pavements are an efficient urban runoff (UR) management solution that also improve water quality. In this work, a photocatalytic layer of Fe2O3 nanoparticles (NP) was incorporated into permeable concrete to evaluate its impact on the removal of several microbiological (Escherichia coli, Pseudomonas aeruginosa, Aeromonas hydrophila, and Enterococcus faecalis) and physicochemical (N-NH4+, ...
DOI:
10.1016/j.jenvman.2019.04.104

75. Effect of pre-cyclic damage and high temperature on residual tensile behavior of concrete

Author:
Xudong Chen; Jingwu Bu; Wei Zhou; Qiao Wang
Source:
Fire safety journal 2019 v.108 pp. 102853
ISSN:
0379-7112
Subject:
concrete; fire resistance; fires; models; temperature; tensile strength
Abstract:
... In view of devastating outcomes of post-earthquake fires, it is imperative to propose a model for the fire-resistance capacity of a seismically-damaged concrete structure. For this purpose, the effects of cyclic damage and high temperature on residual tensile behavior of normal strength concrete are investigated in this paper. Monotonic tensile tests are performed on cylindrical concrete specimens ...
DOI:
10.1016/j.firesaf.2019.102853

76. Effects and mechanisms of erosion control techniques on stairstep cut-slopes

Author:
Gang Liu; Feinan Hu; Fenli Zheng; Qiong Zhang
Source:
Science of the total environment 2019 v.656 pp. 307-315
ISSN:
0048-9697
Subject:
concrete; drainage; erosion control; evapotranspiration; geotextiles; railroads; rain; roads; runoff; sediments; shear strength; soil water; soil water content; vegetation; water content
Abstract:
... Many erosion control techniques, such as stone pitching, concrete revetment, and geotextile covering, have been effective at protecting cut slopes along roads or railways. However, these methods are expensive and hard to operate for high stairstep cut-slopes. To investigate the efficiency of several easily implemented and low-cost techniques, five plots with different treatments were built on stai ...
DOI:
10.1016/j.scitotenv.2018.11.385

77. The Effects of Reinforced Concrete Jacketing on the Earthquake Performance of Precast Structures

Author:
Cihan SOYDAN; Hasan OZKAYNAK
Source:
Süleyman Demirel üniversitesi fen bilimleri enstitüsü dergisi 2019 v.23 no.2 pp. 343-355
ISSN:
1308-6529
Subject:
concrete; earthquakes; fens; humans; thermodynamics
Abstract:
... The majority of industrial buildings located in our country consist of single-story precast systems with pinned beam-to-column connections. Observations made after earthquakes showed that due to high lateral displacement demands occurred under the effects of earthquake loads; significant damage was accumulated throughout the beam-to-column connections and whole structure. Strengthening such buildi ...
DOI:
10.19113/sdufenbed.460280

78. Effects of Reinforcing Fiber Strength on Mechanical Properties of High-Strength Concrete

Author:
Hyun-Do Yun; Seong-Hoon Lim; Won-Chang Choi
Source:
Fibers 2019 v.7 no.10 pp. -
ISSN:
2079-6439
Subject:
compression strength; concrete; models; steel; tensile strength
Abstract:
... This paper investigates the effects of the tensile strength of steel fiber on the mechanical properties of steel fiber-reinforced high-strength concrete. Two levels of steel fiber tensile strength (1100 MPa and 1600 MPa) and two steel fiber contents (0.38% and 0.75%) were used to test the compression, flexure, and direct shear performance of steel fiber-reinforced high-strength concrete specimens. ...
DOI:
10.3390/fib7100093

79. Effects of coal fly ash and fine sawdust on the performance of pervious concrete

Author:
Einstine M. Opiso; Reinerio P. Supremo; Jemima R. Perodes
Source:
Heliyon 2019 v.5 no.11 pp. e02783
ISSN:
2405-8440
Subject:
cement; coal fly ash; concrete; industrial wastes; pavements; runoff; sawdust; waste disposal
Abstract:
... Pervious Concrete (PC) has long been used in surface runoff management. But one of its major drawbacks is its low strength. Several industrial wastes apparently contain properties that could aid the increase in strength of PC such as coal fly ash and fine sawdust. Thus, their utilization is a possible solution that could address the low-strength issues of PC along with industrial waste disposal ma ...
DOI:
10.1016/j.heliyon.2019.e02783
PubMed:
31844716
PubMed Central:
PMC6895696

80. Effects of starch-type polysaccharide on cement hydration and its mechanism

Author:
Hao Zhang; Pan Feng; Lei Li; Wenbing Wang
Source:
Thermochimica acta 2019 v.678 pp. 178307
ISSN:
0040-6031
Subject:
cement; concrete; gels; molecular weight; polysaccharides; sodium hydroxide
Abstract:
... Polysaccharides are widely used as chemical admixtures to modify the early age properties of mortars and concrete and a new starch-based chemical admixture pre-dissolved in NaOH and water was used to reveal the mechanism. The result shows that the induction period can be extended obviously. The impacts of dissolved TRI on surface state of cement particles, C-S-H nucleation and growth process in io ...
DOI:
10.1016/j.tca.2019.178307

81. Effects of super absorbent polymer on scouring resistance and water retention performance of soil for growing plants in ecological concrete

Author:
Laibo Li; Haiming Zhang; Xiangming Zhou; Mingxu Chen; Lingchao Lu; Xin Cheng
Source:
Ecological engineering 2019 v.138 pp. 237-247
ISSN:
0925-8574
Subject:
Lolium perenne; concrete; highways; soil erosion; soil strength; super absorbent polymers; water uptake
Abstract:
... Ecological concrete could protect the slopes along a motorway or on a river bank and prevent water/soil loss and beautify and built the environment compared to ordinary concrete. Overlaying soil, as a key component of ecological concrete, plays an important role in greening rate of ecological concrete. However, natural soil used as overlaying soil cannot meet plants growing demand due to its unsat ...
DOI:
10.1016/j.ecoleng.2019.07.030

82. Efficacy of d-tetramethrin and acetamiprid for control of Trogoderma granarium Everts (Coleoptera: Dermestidae) adults and larvae on concrete

Author:
Nickolas G. Kavallieratos; Maria C. Boukouvala
Source:
Journal of stored products research 2019 v.80 pp. 79-84
ISSN:
0022-474X
Subject:
Trogoderma granarium; acetamiprid; adults; concrete; insects; larvae; mortality; stored products; temperature; tetramethrin; Africa; Asia; Europe
Abstract:
... The khapra beetle, Trogoderma granarium Everts (Coleoptera: Dermestidae) is a dangerous insect of stored products that has currently expanded in Africa, Asia and Europe. Control of this species encounters difficulties when synthetic insecticides are applied either as surface treatments or as grain protectants. Therefore, new insecticidal formulations should be assessed as additional tools towards ...
DOI:
10.1016/j.jspr.2018.11.010

83. Efficient mix design of alkali activated slag concretes based on packing fraction of ingredients and paste thickness

Author:
Dali Bondar; Sreejith Nanukuttan; John L. Provis; Marios Soutsos
Source:
Journal of cleaner production 2019 v.218 pp. 438-449
ISSN:
0959-6526
Subject:
concrete; cost effectiveness; ingredients; light microscopy; sand; slags
Abstract:
... Many studies have been dedicated to the properties of alkali-activated slag concretes as a form of low-carbon high performance concrete, but less work has been focused on the application of mix design procedures to have a dense, durable and cost-efficient alkali-activated concrete. This study proposes a method for selecting the mix proportions of alkali-activated concretes based on the packing fra ...
DOI:
10.1016/j.jclepro.2019.01.332

84. Embodied energy and greenhouse gas emissions analysis of a prefabricated modular house: The “Moby” case study

Author:
Vanessa Tavares; Nuno Lacerda; Fausto Freire
Source:
Journal of cleaner production 2019 v.212 pp. 1044-1053
ISSN:
0959-6526
Subject:
buildings; case studies; concrete; embodied energy; finishes; greenhouse gas emissions; greenhouse gases; steel; transportation; wastes; Europe
Abstract:
... Buildings are big consumers of energy and materials, and important producers of waste and emissions. Prefabrication presents an opportunity to reduce impacts in the building sector; however, few studies have focused on prefabricated houses and with contradictory findings. The main goal of this article is to assess the embodied energy (EE) and greenhouse gas emissions (GHG) of a prefabricated modul ...
DOI:
10.1016/j.jclepro.2018.12.028

85. An Empathetic Added Sustainability Index (EASI) for cementitious based construction materials

Author:
L. Coppola; D. Coffetti; E. Crotti; G. Gazzaniga; T. Pastore
Source:
Journal of cleaner production 2019 v.220 pp. 475-482
ISSN:
0959-6526
Subject:
Earth atmosphere; carbon dioxide; cement; concrete; construction industry; construction materials; durability; ecological footprint; environmental impact; fly ash; freezing; global warming; global warming potential; greenhouse gas emissions; models; plaster; raw materials; renewable resources; shrinkage; slags; steel; sustainable development; tensile strength
Abstract:
... The concrete industry is the largest consumer of natural resources and the Portland cement, the binder of modern concrete mixtures, is not environmentally friendly. The world's cement production, in fact, contributes to the earth's atmosphere about 5–7% of the total CO2 emissions, CO2 being mainly responsible for global warming and climate change. As a consequence, concrete industry in the future ...
DOI:
10.1016/j.jclepro.2019.02.160

86. Energy performance and calorimetric behaviour of cements bearing granite sludge

Author:
G. Medina; I.F. Sáez del Bosque; M. Frías; M.I. Sánchez de Rojas; C. Medina
Source:
Powder technology 2019 v.356 pp. 517-527
ISSN:
0032-5910
Subject:
byproducts; calorimetry; carbon dioxide; cement; concrete; durability; eco-efficiency; energy efficiency; granite; greenhouse gas emissions; heat; manufacturing; mixing; powders; sludge
Abstract:
... Blending supplementary cementitious materials with portland cement is one of the current strategies for producing more eco-efficient binders by lowering the energy consumption and CO2 emissions intrinsic to OPC manufacture. The effect of such additions on heat of hydration and energy performance is a subject of particular interest, for higher heat may reduce the service life of a concrete structur ...
DOI:
10.1016/j.powtec.2019.08.080

87. Enhancing Silicate Dissolution Kinetics in Hyperalkaline Environments

Author:
Erika Callagon La Plante; Tandré Oey; Yi-Hsuan Hsiao; LaKesha Perry; Jeffrey W. Bullard; Gaurav Sant
Source:
Journal of physical chemistry 2019 v.123 no.6 pp. 3687-3695
ISSN:
1932-7455
Subject:
Lewis bases; adsorption; aqueous solutions; chemical bonding; concrete; exposure duration; glass; infrastructure; ions; pH; polymers; radioactive waste; silicate minerals; silicates; sodium; sodium hydroxide; weathering
Abstract:
... The dissolution of silicate minerals and glasses in aqueous solutions is important in many natural and engineered contexts including mineral weathering, nuclear waste stabilization, cementation, and infrastructure degradation. The influences of electrolytes on dissolution rates have been extensively studied, but previous studies have used widely varying minerals and electrolytes, experimental cond ...
DOI:
10.1021/acs.jpcc.8b12076

88. Enhancing the Punching Load Capacity of Reinforced Concrete Slabs Using an External Epoxy-Steel Wire Mesh Composite

Author:
Abdulkhaliq A. Jaafer; Raid AL-Shadidi; Saba L. Kareem
Source:
Fibers 2019 v.7 no.8 pp. -
ISSN:
2079-6439
Subject:
compression strength; concrete; epoxides; slabs; steel
Abstract:
... The present experimental work investigates the applicability and performance of a new strengthening method for concrete slabs, intended to increase their punching resistance using combination layers of steel wire mesh with epoxy attached to the concrete slabs’ tension face. Six simply supported square reinforced concrete slab specimens were tested up to failure under a central concentrated l ...
DOI:
10.3390/fib7080068

89. Enrichment assessment of Sb and trace metals in sediments with significant variability of background concentration in detailed scale

Author:
Lingchen Mao; Hua Ye; Feipeng Li; Meng Yang; Hong Tao; Haifeng Wen
Source:
Environmental science and pollution research international 2019 v.26 no.3 pp. 2794-2805
ISSN:
0944-1344
Subject:
antimony; aquaculture; cadmium; chromium; cobalt; concrete; copper; fabrics; hydrology; industry; iron; irrigation; lakes; lead; manganese oxides; nickel; organic matter; particle size; particle size distribution; sediments; toxicity; zinc; zirconium
Abstract:
... Variability of background concentration of toxic trace metal(loid)s in sediments can often lead to under/over-report of contamination level, even in detailed scale. In this study, both surface (5–10 cm) and subsurface (> 10 cm) sediments were collected at many sites in a small lake (0.528 km²) with multi-function (irrigation, aquaculture, and watercourse) in an industrial area. Total concentration ...
DOI:
10.1007/s11356-018-3836-7

90. Environmental and economic assessment of dwelling construction in Spain and Chile. A comparative analysis of two representative case studies

Author:
Patricia González-Vallejo; Claudia Muñoz-Sanguinetti; Madelyn Marrero
Source:
Journal of cleaner production 2019 v.208 pp. 621-635
ISSN:
0959-6526
Subject:
absorption; bricks; carbon; case studies; cement; ceramics; concrete; construction materials; cropland; ecological footprint; economic analysis; forests; fossil fuels; fossils; pastures; recycled wood; residential housing; steel; Chile; Spain
Abstract:
... Countries are placed under high ecological pressure during economic expansion periods, especially in the construction sector. In order to tackle the effects of such expansion, it is necessary to clearly identify its principal sources of impact. In this respect, the present methodology is proposed, where two dwelling projects (one in Spain, where the methodology is initially implemented, and a seco ...
DOI:
10.1016/j.jclepro.2018.10.063

91. Environmental assessment of multi-functional building elements constructed with digital fabrication techniques

Author:
Isolda Agustí-Juan; Andrei Jipa; Guillaume Habert
Source:
international journal of life cycle assessment 2019 v.24 no.6 pp. 1027-1039
ISSN:
0948-3349
Subject:
air pollutants; air pollution; case studies; concrete; durability; ecosystem services; environmental assessment; environmental impact; environmental performance; life cycle assessment; recycling; sandstone; slabs; uncertainty
Abstract:
... PURPOSE: Digital fabrication is revolutionizing architecture, enabling the construction of complex and multi-functional building elements. Multi-functionality is often achieved through material reduction strategies such as functional or material hybridization. However, these design strategies may increase environmental impacts over the life cycle. The integration of functions may hinder the mainte ...
DOI:
10.1007/s11367-018-1563-4

92. Environmental assessment of valorisation alternatives for woody biomass ash in construction materials

Author:
Tamíris Pacheco da Costa; Paula Quinteiro; Luís A.C. Tarelho; Luís Arroja; Ana Cláudia Dias
Source:
Resources, conservation, and recycling 2019 v.148 pp. 67-79
ISSN:
0921-3449
Subject:
biomass; bitumen; cement; combustion; concrete; construction materials; energy; environmental assessment; environmental impact; fluidized beds; industrial wastes; life cycle assessment
Abstract:
... Ash generated during the combustion of woody biomass for energy production is an industrial waste that should be properly managed in order to minimise the respective environmental impacts. Woody biomass ash valorisation in construction materials to replace conventional materials is an alternative that has proven to be technically feasible. On the other hand, it can present potential environmental ...
DOI:
10.1016/j.resconrec.2019.04.022

93. Environmental consequences and the role of illegal waste dumps and their impact on land degradation

Author:
Magdalena Daria Vaverková; Alžbeta Maxianová; Jan Winkler; Dana Adamcová; Anna Podlasek
Source:
Land use policy 2019 v.89 pp. 104234
ISSN:
0264-8377
Subject:
anthropogenic activities; concrete; ecosystems; environmental impact; fabrics; forests; gases; glass; habitats; indigenous species; insulating materials; invasive species; land degradation; landfills; leachates; monitoring; municipal solid waste; plants (botany); pollutants; pollution; soil; species diversity; synanthropes; tiles; Slovakia
Abstract:
... Landfilling is an anthropogenic activity that may causes land degradation and pollution. During the landfilling of waste, a wide range of pollutants can be released into the environment, e.g. landfill gases and leachate. The existence of illegal landfills is an increasing global problem. Illegal uncontrolled refuse storage areas, commonly referred to as "illegal waste dumps" (IWD), occur most freq ...
DOI:
10.1016/j.landusepol.2019.104234

94. Enzyme activity and histological analysis of Clarias gariepinus fed on Imbrasia belina meal used for partial replacement of fishmeal

Author:
Mmaditshaba M. Rapatsa; Ngonidzashe A. G. Moyo
Source:
Fish physiology and biochemistry 2019 v.45 no.4 pp. 1309-1320
ISSN:
0920-1742
Subject:
Clarias gariepinus; Imbrasia; acid detergent fiber; amylases; carboxylic ester hydrolases; chitin; chitinase; concrete; diet; digestibility; enzyme activity; fish; fish meal; growth performance; histology; intestines; juveniles; liver; protein efficiency ratio; proteinases; satiety; specific growth rate; stocking rate; stomach; tanks
Abstract:
... An experiment was carried out to assess the effect of replacing fishmeal with mopane worm meal in the diet of Clarias gariepinus. Juvenile C. gariepinus weighing 67.04 ± 3 g were stocked in 15 rectangular concrete tanks connected to a recirculating system. Five diets denoted D1, D2, D3, D4 and D5 were formulated to replace fishmeal with mopane worm meal at 0, 10, 20, 40 and 60%. Triplicate groups ...
DOI:
10.1007/s10695-019-00652-3

95. Equivalent standard fire duration to evaluate internal temperatures in natural fire exposed RC beams

Author:
R.T. Kuehnen; M.A. Youssef
Source:
Fire safety journal 2019 v.108 pp. 102831
ISSN:
0379-7112
Subject:
concrete; equations; internal temperature; temperature profiles
Abstract:
... With the recent shift towards performance-based fire design, practical methods to account for natural fire loading when designing concrete structures are needed. Available design methods and analysis approaches are based on standard fire curves. To apply these methods, a natural fire event can be converted to a standard fire with a specific duration (time equivalent). However, existing time equiva ...
DOI:
10.1016/j.firesaf.2019.102831

96. Estimating the impacts of financing support policies towards photovoltaic market in Indonesia: A social-energy-economy-environment model simulation

Author:
Muhammad Indra Al Irsyad; Anthony Halog; Rabindra Nepal
Source:
Journal of environmental management 2019 v.230 pp. 464-473
ISSN:
0301-4797
Subject:
aluminum; concrete; developing countries; electricity; emissions; energy; energy costs; energy policy; environmental factors; fossil fuels; funding; households; industry; input output analysis; markets; people; prices; simulation models; solar collectors; solar energy; steel; subsidies; urban population; Indonesia
Abstract:
... This study develops a hybrid energy agent-based model that integrates the input–output analysis, environmental factors and socioeconomic characteristics of rural and urban households in Indonesia. We use the model to estimate the effects of four solar energy policy interventions on photovoltaic (PV) investments, government expenditure, economic outputs, CO2e emissions and the uses of steel, alumin ...
DOI:
10.1016/j.jenvman.2018.09.069

97. Estimating the resilient modulus of crushed recycled pavement materials containing crumb rubber using the Clegg impact value

Author:
Mohammad Saberian; Jie Li; Bao Thach Nguyen; Sujeeva Setunge
Source:
Resources, conservation, and recycling 2019 v.141 pp. 301-307
ISSN:
0921-3449
Subject:
compression strength; concrete; empirical models; pavements; rubber; wastes; California
Abstract:
... Since the determination of resilient modulus (Mr) from the repeated load triaxial test is rather complicated, due to the expensive procedure and time-consuming nature, attempts have been made to estimate it using other properties, such as the unconfined compressive strength and California bearing capacity based on empirical models. However, because of the dynamic nature of the Mr, it should be est ...
DOI:
10.1016/j.resconrec.2018.10.042

98. Ettringite-Related Dimensional Stability of CO₂-Cured Portland Cement Mortars

Author:
Duo Zhang; Victor C. Li; Brian R. Ellis
Source:
ACS sustainable chemistry & engineering 2019 v.7 no.19 pp. 16310-16319
ISSN:
2168-0485
Subject:
biological resistance; calcium carbonate; carbon dioxide; carbon sequestration; carbonation; cement; concrete; construction materials; dimensional stability; industry; longevity; microstructure; scanning electron microscopy; steam; storage time; sustainable manufacturing; temperature
Abstract:
... Carbonation curing, where cement is cured in a CO₂-rich environment, is an emerging technology in the precast industry that promotes CO₂ sequestration in construction materials. It demonstrates good promise for enhancing material strength development, chemical resistance, and manufacturing sustainability. A critically important but little studied aspect of carbonation curing is the dimensional sta ...
DOI:
10.1021/acssuschemeng.9b03345

99. Evaluating commercial feasibility of a new tall wind tower design concept using a stochastic levelized cost of energy model

Author:
Phil Barutha; Ali Nahvi; Bin Cai; H. David Jeong; Sri Sritharan
Source:
Journal of cleaner production 2019 pp. -
ISSN:
0959-6526
Subject:
concrete; cost effectiveness; economic feasibility; energy; energy costs; experts; income; industry; issues and policy; life cycle costing; models; power generation; transportation; wind; wind power; wind turbines; United States
Abstract:
... Wind power generation has seen a dramatic increase in the 21st century and the Department of Energy (DOE) envisions that wind energy will become a much larger part of overall power generation in the U.S. by 2050. Wind turbines have continued to grow in size during the last few decades with towers commonly built at a height of 80 m for typical utility-scale turbines in the Unites States, and this i ...
DOI:
10.1016/j.jclepro.2019.118001

100. Evaluating engineering properties and environmental impact of pervious concrete with fly ash and slag

Author:
Xiaodan Chen; Hao Wang; Husam Najm; Giri Venkiteela; John Hencken
Source:
Journal of cleaner production 2019 v.237 pp. 117714
ISSN:
0959-6526
Subject:
cement; concrete; energy; energy conservation; environmental impact; fly ash; freeze-thaw cycles; furnaces; greenhouse gas emissions; greenhouse gases; life cycle assessment; modulus of rupture; radar; slags; strength (mechanics)
Abstract:
... This study evaluated engineering properties, cost, and energy and environmental impacts of three pervious concrete mixtures: pervious concrete with regular Portland cement (PC-Regular); with fly ash (PC-FA); and with blast furnace slag (PC–BFS). Laboratory tests were conducted to measure mechanical strength, hydraulic conductivity, and freezing-thaw resistance of mixtures. Life-cycle assessment (L ...
DOI:
10.1016/j.jclepro.2019.117714