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... 3D printing construction techniques are believed to have potential sustainability benefits, including improved resource efficiency, increased construction productivity, and construction of complex geometries without supporting structures. 3D printable concrete materials, when introducing industrial wastes such as fly ash, silica fume, and slag, may also bring additional sustainability benefits. Th ...
... With the scarcity of land and rapid drive towards sustainable development, numerous research studies are conducted on diverting waste from landfills. However, majority of these studies are focused on either experimental investigation of material characteristics or environmental impacts. Due to heavy virgin material usage, building material manufacturing industries are increasingly interested in us ...
carbon; carbon footprint; case studies; concrete; industry; models; transportation
Abstract:
... There are numerous strategies that can be used to reduce the embodied carbon footprint of real property investments, many of which can be accomplished for no additional cost and with minimal performance impacts. This study aims to propose the incorporation of the life cycle carbon quantification into the government procurement of real property process in order to reach out to low-carbon durable an ...
... The environmental conditions of sustainable improvement in manufacturing consist of the application of secondary raw materials in the design and structure of new structures. Presently, the demand to construct new structures is growing rapidly, especially in the developed world. All of the construction and demolition (C&D) waste is deposited in open landfills in easily reachable spaces, which leads ...
... Ignimbrites are extensively used in historical places, houses, hospitals, mosques, graveyard stones etc. worldwide especially in Ahlat-Bitlis, Turkey. These stones have prominent features such as good-insulation, durability and lightness. Another natural material that is widely preferred in the construction sector due to its advantages is pumice. In this paper, ignimbrites in black, light yellow, ...
... The cement industry is currently faced with the great challenge of reducing its vast carbon footprint toward sustainability. With the findings on the rehydration behaviors of thermal-activated hardened cement paste, cement, the ‘glue’ of concrete, originally considered a non-renewable resource, now could complete a closed-loop of its whole life cycle. The up-to-date investigations on thermal activ ...
... Bamboo continues to be of interest in buildings and structures owing to its good mechanical properties and sustainability. In this study, a new method of bamboo use is proposed, which is to twine laminated bamboo lumber (LBL) slices to form a bamboo-fiber-reinforced composite tube (bamboo slices twining tube, BST). Considering the high tensile strength of bamboo fiber, BST is proposed to replace s ...
... Transportation systems have enormous challenges in terms of sustainability since they deal with issues like economic, environmental, and social factors, and pavement sustainability is unavoidably one of these problems. This study investigates pavements' sustainability potential, and in doing so, it looks at both global practices and personal experiences. This research investigates the long-term vi ...
... Using fibre-reinforced polymers (FRP) in construction avoids corrosion issues associated with the use of traditional steel reinforcement, while seawater and sea sand concrete (SWSSC) reduces environmental issues and resource shortages caused by the production of traditional concrete. The paper gives an overview of the current research on the bond performance between FRP tube and concrete with part ...
... The huge amounts of natural resources and high level of energy consumption in concrete production necessitate the use of agricultural and demolition wastes as alternative construction materials. The present study explores pervious concrete (PC) that includes sorghum husk ash (SHA) and recycled concrete aggregate (RCA) as alternatives to cement and natural aggregate (NA) in standard PC mixtures. PC ...
circular economy; concrete; construction materials; eco-efficiency; feedstocks; gravel; health services; infrastructure; issues and policy; sand; sanitation; supply chain; weather
Abstract:
... Global demand for buildings and infrastructure is extremely high as provision of shelter, sanitation and healthcare are paramount to safeguard the world's growing population. Concrete is a preferred construction material to meet this demand, but its production is leading to overexploitation of natural gravel and sand, causing an environmental crisis in regions where these materials are extracted u ...
compression strength; concrete; fire safety; models; modulus of elasticity
Abstract:
... It is well documented that the load during heating process has significant impacts on mechanical properties of concrete at high temperatures. However, this important effect is not adequately covered in the existing constitutive models. This paper presents an experimental study on the uniaxial compressive stress-strain relationship of concrete specimens stressed with different load levels (0%–70%) ...
... The use of supplementary cementitious materials (SCMs) can improve the properties of concrete, reduce pressure on natural resources and CO₂ emissions. However, certain SCMs are unable to meet the growing demand of construction sector. The presented study investigates the role of bentonite clay (BC) and its synergistic effect with silica fume (SF) as partial replacement of cement on strength, durab ...
... In this study, multi-minerals were incorporated in fiber reinforced internal-cured green concrete (FRICC) to achieve both an improvement in concrete performance and environmental sustainability. The effect of multi-minerals on FRICC with pre-wetted lightweight fine aggregate (LWFA) and basalt-polypropylene (BF-PF) fiber was investigated through examining compressive and flexural strengths, flexura ...
... The control of agricultural nitrogen through inflow rivers is crucial for lake aquatic environment conservation, while nitrate is the main form of non-point source pollution of agricultural nitrogen in watersheds. Therefore, understanding the nitrate sources and transformation in the intensive-agricultural region was particularly concerned. Nitrate sources and transformation varied largely during ...
... This study investigates the effectiveness of hybrid fibers (steel and macro-synthetic) on the shear behavior of prestressed concrete beams. The hybrid fiber combination was selected to avoid workability issues at high volume dosages and ensure effective crack arresting over the crack opening range. Fracture studies included testing notched concrete prisms to identify the role of hybrid fibers in t ...
... This research investigated the effects of impermeable pavements, permeable pavers, and permeable concrete on growth, physiology, and ecosystem services provisioning of established Celtis australis and Fraxinus ornus plants over a 5-year-period. In March 2012, 48 trees were planted into 1 m² planting pits according to a randomized block design with 6 blocks, and randomly assigned to one of the four ...
... Conversion of pervious natural ground into impermeable pavement systems has caused severe environmental impacts such as urban heat islands, increased infrastructure-related greenhouse gas (GHG) emissions and energy consumption, and runoff generation / flashfloods during rainfall events. These phenomena can be addressed with the use of pervious concrete pavement (PCP) systems, which have gained acc ...
... Worldwide, reduction in emission of greenhouse gas such as carbon dioxide (CO₂) is a crucial issue in construction and building industries from a sustainability perspective. The present study aims to achieve a higher CO₂ balance in concrete as the role of capture and storage during service life by using an organic liquid emitting diode (OLED) waste glass as a cementitious binder. Concrete with 0%, ...
... Mining and extraction of stones and minerals play a significant role in many countries economic growth in the world. The production of dolomite minerals in various industries in India and other countries produces vast amounts of waste in different fractions. Disposal of these types of industrial wastes in an immense quantity causes environmental pollution. The performance of dolomite mining residu ...
... The rapid increase in steel slag generation globally highlights the urgent need to manage the disposal or utilization processes. In addition to conventional landfill disposal, researchers have successfully reused steel slag in the construction, chemical, and agricultural fields. With the large portions of alkaline silicate mineral content, steel slag can also be used as a suitable material for car ...
... With the recent increase in demand for high-strength concrete, higher cement content is utilized, which has increased the need for cement. The cement industry is one of the most energy-consuming sectors globally, contributing to 10% of global carbon dioxide (CO₂) gas emissions and global warming. Similarly, with rapid urbanization and industrialization, a vast number of by-products and waste mater ...
cement; chlorides; concrete; data collection; permeability; volcanic ash
Abstract:
... The addition of supplementary cementitious materials (SCM), particularly at nano level, leads to several benefits, such as the reduced permeability of concrete matrix, which consequently leads to having more durable and sustainable concrete. The dataset presented in the current paper was collected from two series of experiments. The natural pozzolana used in making concrete mixtures is of volcanic ...
... In recent years, the research direction is shifted toward introducing new supplementary cementitious materials (SCM) in lieu of in place of Portland cement (PC) in concrete as its production emits a lot of toxic gases in the atmosphere which causes environmental pollution and greenhouse gases. SCM such as sugarcane bagasse ash (SCBA), metakaolin (MK), and millet husk ash (MHA) are available in abu ...
... CaCO₃ particles are widely employed in different fields due to their properties, such as tunable size and morphology, tailored porosity and surface area, biocompatibility and nontoxicity. Therefore, many researchers have studied and developed several synthesis methods, even with and without additives. Among them, the synthesis of CaCO₃ through the carbonation method can be considered the most eco- ...
basalt; coastal zone management; concrete; models; polymers; seawater
Abstract:
... Basalt fibre-reinforced polymer (BFRP) bar-reinforced seawater sea-sand concrete (SSSC) structures have long-term development significance. However, there have been few systematic studies on the fatigue bond behaviour between BFRP bars and SSSC. Therefore, to fully understand the fatigue bond mechanism of BFRP bar-reinforced SSSC structures, the fatigue bond performance between BFRP bars and SSSC ...
agricultural land; biodiversity; birds; concrete; dairy industry; farm management; focus groups; grasslands; habitats; insects; intensive farming; landscapes; milk production; Netherlands; Western European region
Abstract:
... As elsewhere in Western Europe, large scale intensive agriculture dominates the landscape of the Netherlands. Grassland for dairy production occupies more than a quarter of its land surface. The high production intensity on conventionally farmed grassland leads to poor habitat quality, resulting in sharp declines in bird and insect numbers. Nature-inclusive agriculture (NIA) comprises innovations ...
... Groundwater‐flow models depend on hydraulic head and flux observations for evaluation and calibration. A different type of observation—change in storage measured using repeat microgravity—can also be used for parameter estimation by simulating the expected change in gravity from a groundwater model and including the observation misfit in the objective function. The method is demonstrated using new ...
... Botanical concrete (BC) is a novel sustainable material that can simultaneously recycle concrete and wood waste without using cement. It has potential for use provided its high water absorption and low stability, caused by the inclusion of hydrophilic wood particles, are mitigated. This study aims to improve the water resistance of BC by experimenting with forming conditions and varying the amount ...
Ephestia kuehniella; active ingredients; agriculture; concrete; cypermethrin; dichlorvos; flour; glass; instars; mortality; moths; pests; pupae; temperature
Abstract:
... BACKGROUND: Mediterranean flour moth or mill moth Ephestia kuehniella Zeller (Lepidoptera: Pyralidae) is a common pest of cereals and flour throughout the world. In this study, eggs, third instar larvae, pupae and adults of E. kuehniella were exposed to five elevated temperatures at a range of 45 to 65 °C for 5, 8, 10, 14, 18, 23 and 30 min. The effect of cypermethrin and dichlorvos was assessed o ...
concrete; energy; groundwater flow; heat transfer; phase transition; renewable energy sources; temperature
Abstract:
... The use of phase change materials (PCMs) within the precast high-strength concrete (PHC) energy pile is relatively rare. A study concerning the thermal performance of the PHC energy pile backfilled with PCMs were performed to compare with conventional backfill materials. Field tests of the PHC energy pile were conducted. Then, different types of heat transfer numerical models for the PHC energy pi ...
bitumen; brittleness; concrete; regression analysis; total organic carbon
Abstract:
... The erosion factors including time, depth and environment factors are potential to cause significant negative influence on the induction heating asphalt concrete. Therefore, this research aims to investigate the influence of erosion factors on the induction heating asphalt concrete and its mechanism. Thirty-six groups of erosion test with different erosion factors were conducted on the induction h ...
... Civil engineering has a specific position for different forms of concrete as a century-old material. One of the most popular materials for human consumption is made from this substance. In recent years, solutions have been presented for the manufacturing of concrete, making concrete environmentally friendly and also making current waste useable as additives for concrete. In this research, the mech ...
... In this study, wind tunnel experiments were conducted to determine the relationship between the texture of road surfaces and the threshold wind velocity that causes the movement of sparsely distributed gravels. We proposed a method that uses analogous particles having lower densities compared to actual gravel, considering the threshold velocity for gravel is too large to imitate in a typical wind ...
cement; concrete; durability; fly ash; furnaces; gypsum; modulus of elasticity; modulus of rupture; slags; sulfates
Abstract:
... Sulfate erosion, as one of the most aggressive environmental attack, can cause severe damage to concrete infrastructures. This study examined the durability of an eco-friendly lightweight concrete (LWC), made with artificial lightweight fine aggregate and various mineral admixtures exposed to both physical and chemical sulfate attack by performing the change of concrete mass, dynamic elastic modul ...
brittleness; concrete; deformation; durability; energy; heat treatment; rubber; temperature
Abstract:
... The rubberized self-compacting concrete (RSCC) combines the better ductility and toughness of rubber aggregates and the better working performance of self-compacting concrete (SCC), and has gained popularity. In practice, concrete structures often suffer multiple impacts loading during their service life. Therefore, this work investigates the dynamic compressive properties of RSCC under multiple i ...
adsorbents; adsorption; concrete; desorption; environmental technology; heavy metals; iron oxides; models; pH; permeability; sorption isotherms; wastewater
Abstract:
... The effects of partially adding iron-oxide-modified aggregate to OPC-based pervious concrete filter on the mechanical properties, heavy metal removal and leaching were investigated. Up to 10% of both coarse and fine aggregates were coated with iron oxide and filters (IOMA-C, coarse alone modified, IOMA-F fines alone modified and IOMA-CF) were prepared. Compressive strengths of the concrete improve ...
... High-fluorine alkali-free liquid accelerator (AF₋ₕf, F⁻ concentration was about 2.31g/L) was still used in engineering because of its low cost, excellent stability, and coagulation-promoting effect. The main purpose of this study was to explore the leaching behavior of fluorine ions in shotcrete for tunnel lining with high-fluorine alkali-free liquid accelerator and whether there was fluoride poll ...
Monte Carlo method; carbon; carbon dioxide; concrete; discount rate; fly ash; infrastructure; models; China
Abstract:
... Small and medium span bridges account for 86% of the bridges in China, and maintenance is necessary to ensure their safety and serviceability. The infrastructure sector causes substantial CO₂ emissions, and it is one of the most polluting sectors. Fly ash (FA) is often used in bridges to reduce CO₂ emissions. Moreover, the lack of temporal information is an important limitation of the life cycle C ...
... Urbanisation of coastal areas and growth in the blue economy drive the proliferation of artificial structures in marine environments. These structures support distinct ecological communities compared to natural hard substrates, potentially reflecting differences in the materials from which they are constructed. We undertook a meta-analysis of 46 studies to compare the effects of different material ...
Singapore; algae; climate change; community structure; concrete; fauna; granite; habitats; limestone; littoral zone; population growth; sandstone; species richness; urbanization
Abstract:
... The urbanisation and hardening of shorelines is likely to continue in response to coastal population growth and climate change. To mitigate associated ecological impacts, ecological engineering is being increasingly applied to enhance local biodiversity. This includes retrofitting topographically complex tiles or units onto intertidal artificial structures to mimic features of the natural hard-bot ...
biomass; compression strength; concrete; modulus of elasticity; modulus of rupture; rubber; wood; wood chips
Abstract:
... HighlightsA more flexible and ductile concrete was produced with micronized rubber powder (MRP) and wood chip inclusions.Failure modes with MRP or wood chip inclusions were less sudden and less catastrophic than with 100% concrete.The composites with MRP and wood chips lessened the propagation of cracks throughout the specimen.Compressive strength was reduced when MRP or wood chips was used as a r ...
... To promote diatom-based biofuel productions in clean energy, this paper explores the potential of using biosilica as a renewable and regenerative byproduct from diatom-based biofuel production in cementitious materials. High-purity diatomite (DE), a biosilica model compound, is selected to investigate the microstructure and durability performance of diatom-based cementitious composites. The replac ...
... Early-stage CO₂ curing technology for alkaline construction materials (such as cement concrete) has gained increasing interest owing to the advantages of material properties improvement and high potential of CO₂ sinking. Less attention, however, has been paid to morphological characteristics of CaCO₃ in carbonated cement concrete. The crystal structure and micromorphology of CaCO₃ in an early-age ...
cleaning; coconut meal; concrete; design for environment; exhibitions; journals; multi-criteria decision making; residential housing; slabs; social impact; sustainable development; weight
Abstract:
... Since the establishment of the Sustainable Development Goals, great concern has arisen on how to diminish the impacts that result from construction activities. In such context, Modern Methods of Construction (MMC) rise as a powerful way to reduce life cycle impacts through optimizing the consumption of materials. This paper focuses on the sustainability assessment of different modern construction ...
... Phase change materials (PCMs) can improve indoor thermal comfort and reduce energy consumption, while bio-based concrete is an environment-friendly material that enables indoor humidity regulation and heat insulation. However, only a few studies have explored the integrated application of the two materials and comprehensively analyzed the energy and hygrothermal performance. In this study, a passi ...
... The number of installed offshore wind turbines is continuously growing worldwide in recent years. Offshore wind farms are generally located near the coast close to traffic lanes and are exposed to the risk of collisions from visiting and passing ships. Potential consequences of collisions may vary from local structural damage to the detachment of turbine nacelles and rotors, and even tower collaps ...
... Concrete structures fail when external water and aggressive particles penetrate and cause problems such as acidification and rusting of internal steel structures. Nowadays, surface protective coatings are mostly used to protect concrete. However, there are problems such as poor water resistance of inorganic coating and poor adhesion of organic coating. In this paper, we use sol-gel method to compo ...
... The particle packing of cementitious materials is of essential importance to the performance of paste which constitutes the most uncertain part of mortar/concrete. Such importance is arising from the fact that the design of cementitious particle system inevitably involves the packing design, particularly for the emerging materials of 3D printable concrete and ultra-high performance concrete (UHPC) ...
Large White; autumn; breast meat; carcass yield; concrete; experimental design; feed conversion; genetic lines; hatcheries; males; poults; spring; statistical models
Abstract:
... Large White male turkey genetic lines (GL) comparison in performance and processing yields under the same conditions are rare in the literature. Two rearing experiments (EXP) were conducted to accomplish 2 objectives. The first objective was to test the effects of poult source and genetic lines on performance and processing yields. The second objective was to extract season and growth patterns whe ...