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1. A green ultra-lightweight chemically foamed concrete for building exterior: A feasibility study

Author:
Jinyan Shi; Baoju Liu; Zhihai He; Yuanchun Liu; Junyi Jiang; Tianyu Xiong; Jiawei Shi
Source:
Journal of cleaner production 2021 v.288 pp. 125085
ISSN:
0959-6526
Subject:
compression strength; concrete; density; feasibility studies; financial economics; foaming; heavy metals; humidity; insulating materials; leaching; particles; polystyrenes; pressure; rivers; sediments; temperature; thermal conductivity; water
Abstract:
... Ultra-lightweight foamed alkali-activated concrete based on river sediment-metakaolin blends was prepared by the mixed foaming method of chemical foaming. Polluted river sediment is transformed into eco-friendly foamed concrete without heating and pressure. The results showed that ultra-lightweight foamed concrete presented its dry density between 100 and 600 kg/m³, the thermal conductivity betwee ...
DOI:
10.1016/j.jclepro.2020.125085

2. Biofilms in the gravity sewer interfaces: making a friend from a foe

Author:
Adrian Augustyniak; Pawel Sikora; Bartłomiej Grygorcewicz; Daneish Despot; Burga Braun; Rafał Rakoczy; Ulrich Szewzyk; Matthias Barjenbruch; Dietmar Stephan
Source:
Re/views in environmental science and bio/technology 2021 v.20 no.3 pp. 795-813
ISSN:
1569-1705
Subject:
assets; biochemical pathways; biofilm; bioreactors; concrete; gravity; infrastructure; plankton; pollution; sediments; wastewater; wastewater treatment; water flow; Western European region
Abstract:
... Sewer systems are an integral part of our modern civilization and are an imperative underground infrastructure asset that our society relies on. In Western Europe alone, 92% of the resident pollution is connected to sewer systems. This extensive coverage of sewerage systems presents an ideal habitation for microorganisms to strive. Sewers can be considered continuous flow bioreactors. They are alw ...
DOI:
10.1007/s11157-021-09582-0

3. Sound-insulation and photocatalytic foamed concrete prepared with dredged sediment

Author:
Ruitang Kou; Ming-Zhi Guo; Yuanyu Shi; Maofei Mei; Linhua Jiang; Hongqiang Chu; Yingzhong Zhang; Hengqing Shen; Likun Xue
Source:
Journal of cleaner production 2022 v.356 pp. 131902
ISSN:
0959-6526
Subject:
air pollution; calcium carbide; cement; compression strength; concrete; hydrogen peroxide; insulating materials; lakes; light; photocatalysis; photocatalysts; porosity; sediments; slags; thermal conductivity
Abstract:
... Recycling of dredged sediment (DS), derived from the routine dredging operation of rivers, lakes and seas, into construction materials represents an eco-friendly way to alleviate the burden on the environment. At higher incorporation dosages, however, DS causes a dramatic reduction in the mechanical properties of the host materials, which greatly stymies a broader application. In this study, DS fr ...
DOI:
10.1016/j.jclepro.2022.131902

4. Environmental assessment, mechanical behavior, and chemical properties of self-compacting mortars (SCMs) with harbor dredged sediments to be used in construction

Author:
Nongwendé Philippe Ouédraogo; Frédéric Becquart; Mahfoud Benzerzour; Nor-Edine Abriak
Source:
Environmental science and pollution research 2021 v.28 no.39 pp. 55003-55013
ISSN:
0944-1344
Subject:
algorithms; antimony; cadmium; chlorides; compression strength; concrete; environmental assessment; environmental impact; heat treatment; lead; mechanical properties; mercury; nickel; raw materials; research; sediment contamination; sediments; sulfates; total organic carbon; wastes
Abstract:
... Environmental and ecological issues have led to the development of new sustainable channels for the recovery of dredged sediments. One of the major difficulties of sediment valorization lies in particular in its very heterogeneous composition. For example, the presences of heavy metals and organic matter have a significant influence on the environmental impact of materials formulated with sediment ...
DOI:
10.1007/s11356-020-12279-6

5. Scale deposits in tunnel drainage systems – A study on fabrics and formation mechanisms

Author:
Stefanie Eichinger; Ronny Boch; Albrecht Leis; Günther Koraimann; Cyrill Grengg; Gunnar Domberger; Manfred Nachtnebel; Christian Schwab; Martin Dietzel
Source:
Science of the total environment 2020 v.718 pp. 137140
ISSN:
0048-9697
Subject:
aqueous solutions; aquifers; aragonite; calcite; calcium; calcium carbonate; case studies; concrete; data collection; drainage; drainage systems; environmental factors; fabrics; highways; hydrochemistry; magnesium; models; pH; porous media; prediction; sediments; sodium
Abstract:
... Rapid deposition of chemical sediments, particularly calcium carbonate, is a widespread phenomenon in tunnel constructions, which can significantly disturb water draining. The removal of the scale deposits in the drainage setting is labor and cost intensive. Prediction or prevention of these unwanted scale deposits are challenging and require detailed knowledge on their site-specific source, forma ...
DOI:
10.1016/j.scitotenv.2020.137140

6. Sustainable ex-situ remediation of contaminated sediment: A review

Author:
Yuying Zhang; Claudia Labianca; Liang Chen; Sabino De Gisi; Michele Notarnicola; Binglin Guo; Jian Sun; Shiming Ding; Lei Wang
Source:
Environmental pollution 2021 v.287 pp. 117333
ISSN:
0269-7491
Subject:
concrete; cost benefit analysis; environmental assessment; life cycle assessment; multi-criteria decision making; remediation; sediment contamination; sediments
Abstract:
... Routine waterway dredging activities generate huge volumes of dredged sediment. The remediation of dredged contaminated sediment is a worldwide challenge. Novel and sustainable ex-situ remediation technologies for contaminated sediment have been developed and adopted in recent years. In this review paper, the state-of-art ex-situ treatment technologies and resource utilisation methods for contamin ...
DOI:
10.1016/j.envpol.2021.117333

7. A field performance evaluation of the periodic maintenance for pervious concrete pavement

Author:
Nian Hu; Jiong Zhang; Shuang Xia; Ruonan Han; Zhaoxia Dai; Rui She; Xinzhuang Cui; Bowen Meng
Source:
Journal of cleaner production 2020 v.263 pp. 121463
ISSN:
0959-6526
Subject:
atmospheric deposition; concrete; infiltrometers; pavements; permeability; rain; runoff; sediments
Abstract:
... The pores of pervious concrete pavement will be clogged by sediment carried by rainwater runoff and atmospheric deposition on the pavement in the course of using, thus reducing the permeability of pavement. It is necessary to adopt effective maintenance measures to keep the permeability of the pavement. In this study, an improved single ring infiltrometer is used to measure the permeability of a n ...
DOI:
10.1016/j.jclepro.2020.121463

8. Application performance and nutrient stoichiometric variation of ecological ditch systems in treating non-point source pollutants from paddy fields

Author:
Junli Wang; Guifa Chen; Zishi Fu; Xiangfu Song; Linzhang Yang; Fuxing Liu
Source:
Agriculture, ecosystems & environment 2020 v.299 pp. 106989
ISSN:
0167-8809
Subject:
agriculture; carbon nitrogen ratio; concrete; control methods; ecosystems; emissions; environment; homeostasis; leaves; nutrient content; nutrients; paddies; pollutants; pollution; pollution control; rice; runoff; sediments; soil ecology; stoichiometry; total nitrogen; total organic carbon; total phosphorus
Abstract:
... Nutrient emissions from paddy fields are one of the main sources of agricultural non-point source (NPS) pollution. Based on the “4R” (Reduce-Retain-Reuse-Restore) strategical system of agricultural NPS pollution control, ecological ditches are effective control measures under the “Retain” system. In this study, the nutrient removal efficiency and stoichiometric variations in three different ecolog ...
DOI:
10.1016/j.agee.2020.106989

9. Assessment of Restorative Maintenance Practices on the Infiltration Capacity of Permeable Pavement

Author:
Mari E. Danz; William R. Selbig; Nicolas H. Buer
Source:
Water 2020 v.12 no.6 pp. -
ISSN:
2073-4441
Subject:
air; bitumen; brooms; concrete; infiltration rate; leaves; pavements; pollution load; pressure; sediments; stormwater; surfaces; urban development; volume; washing
Abstract:
... Permeable pavement has the potential to be an effective tool in managing stormwater runoff through retention of sediment and other contaminants associated with urban development. The infiltration capacity of permeable pavement declines as more sediment is captured, thereby reducing its ability to treat runoff. Regular restorative maintenance practices can alleviate this issue and prolong the usefu ...
DOI:
10.3390/w12061563

10. 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

11. 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

12. Geochemical signature of urbanisation in Blue Mountains Upland Swamps

Author:
Rani Carroll; Jason K. Reynolds; Ian A. Wright
Source:
Science of the total environment 2020 v.699 pp. 134393
ISSN:
0048-9697
Subject:
bicarbonates; calcium; chlorides; concrete; ecological communities; electrical conductivity; endangered ecosystems; environmental impact; geochemistry; highlands; indigenous species; introduced species; ions; leaves; mountains; pH; potassium; sediments; sodium; strontium; swamps; urbanization; watersheds; weathering; New South Wales
Abstract:
... Urbanisation leaves a geochemical signature on the environment, as weathering of urban materials such as concrete contributes to elevated levels of major ions including calcium, bicarbonate and potassium. However, there is limited research that addresses the ecological consequences of this signature on the biotic community. Blue Mountains Upland Swamps (BMUS), an endangered ecological community wi ...
DOI:
10.1016/j.scitotenv.2019.134393

13. How Does the Japanese Water Shrew Chimarrogale platycephalus Cross the Concrete Walls of Check Dams?

Author:
Hiroaki Saito; Hiroshi Hashimoto; Teruaki Hino; Masaharu Motokawa
Source:
Mammal study 2019 v.44 no.1 pp. 1-11
ISSN:
1348-6160
Subject:
concrete; dams (hydrology); rivers; sediments; shrews; streams; surveys; Japan
Abstract:
... The concrete walls of check dams are considered a physical barrier for aquatic and semiaquatic animals that inhabit mountain streams. Traveling behaviors around concrete check dams by the Japanese water shrew Chimarrogale platycephalus, a semi-aquatic mammal, were directly observed via radio-tracking in Kamikoshi Stream in central Honshu, Japan. Traveling behaviors were mainly observed on the wet ...
DOI:
10.3106/ms2017-0056

14. Regional Economic Impacts from Timber Check Dam Construction—A Comparison with Concrete Check Dam Construction

Author:
Tomohumi Huzita; Ryu Noda; Chihiro Kayo
Source:
Forests 2020 v.11 no.10 pp. -
ISSN:
1999-4907
Subject:
business enterprises; concrete; dams (hydrology); disaster preparedness; disasters; economic impact; flood control; harvesting; income; input output analysis; interviews; lumber; prices; rain; runoff; sediments; typhoons; Japan
Abstract:
... Recently, many mountain disasters caused by natural phenomena, such as typhoons and heavy rains, have struck Japan, where check dams are used as important disaster prevention structures. Meanwhile, increased timber use in Japan is expected to revitalize regional economies, thus drawing attention to the use of timber in check dams. However, comparisons between timber and concrete check dams, in ter ...
DOI:
10.3390/f11101073

15. Stabilization by geomorphic reclamation of a rotational landslide in an abandoned mine next to the Alto Tajo Natural Park

Author:
Ignacio Zapico; Antonio Molina; Jonathan B. Laronne; Lázaro Sánchez Castillo; José F. Martín Duque
Source:
Engineering geology 2020 v.264 pp. 105321
ISSN:
0013-7952
Subject:
computer software; concrete; digital elevation models; environmental impact; kaolin; landslides; monitoring; parks; photogrammetry; remediation; risk; sediments; streams; surface drainage; unmanned aerial vehicles; valleys; wastes; watersheds; Spain
Abstract:
... Two abandoned kaolin mines, surrounding one of the most outstanding natural parks of Spain, the Alto Tajo, have caused frequent environmental impacts. Within these are unstable areas prone to extensive mass movements that influence off-site sediment dynamics over the fluvial system. A waste dump in the Nuria mine obstructing a stream in the center of a valley experienced a rotational landslide. Ma ...
DOI:
10.1016/j.enggeo.2019.105321

16. Sustainable conversion of contaminated dredged river sediment into eco-friendly foamed concrete

Author:
Xiaoyun Yang; Ling Zhao; M. Aminul Haque; Bing Chen; Zeng Ren; Xinde Cao; Zhemin Shen
Source:
Journal of cleaner production 2020 v.252 pp. 119799
ISSN:
0959-6526
Subject:
X-ray diffraction; X-ray fluorescence spectroscopy; arsenic; cement; chromium; compression strength; concrete; copper; energy-dispersive X-ray analysis; fluorescence; foams; heat; heavy metals; landfills; porosity; profits and margins; recycling; rivers; scanning electron microscopy; sediment contamination; sediments; silica; thermal conductivity; zinc
Abstract:
... Large quantities of contaminated river sediment is dredged continuously worldwide, which is generally dumped in landfill areas resulting in land occupation and soil-groundwater pollution. An innovative approach is demonstrated in this study to transform contaminated sediment into eco-friendly foamed concrete by adding cement, foam and silica fume without heating and pressure. With the foam percent ...
DOI:
10.1016/j.jclepro.2019.119799

17. Valorization of dredged sediments in self-consolidating concrete: Fresh, hardened, and microstructural properties

Author:
Amine el Mahdi Safhi; Patrice Rivard; Ammar Yahia; Mahfoud Benzerzour; Kamal Henri Khayat
Source:
Journal of cleaner production 2020 v.263 pp. 121472
ISSN:
0959-6526
Subject:
carbon dioxide; cement; compression strength; concrete; leaching; microstructure; particle size; sediments
Abstract:
... Several studies have proven the use of dredged sediments as supplementary cementitious materials (SCMs), but limited information is available on the effect of such treated sediments on self-consolidating concrete performance. The main objective of this study was to evaluate the performance of self-consolidating concrete (SCC) fabricated with treated sediments. The sediments were thermally treated ...
DOI:
10.1016/j.jclepro.2020.121472

18. A graph theory tool for assessing structural sediment connectivity: Development and application in the Mercurey vineyards (France)

Author:
M. Fressard; E. Cossart
Source:
Science of the total environment 2019 v.651 pp. 2566-2584
ISSN:
0048-9697
Subject:
case studies; concrete; drainage channels; farmers; landscapes; mathematical theory; roads; sediment transport; sediments; soil erosion; vines; vineyards; watersheds; wines; France
Abstract:
... In agricultural lands, assessing how the spatial patterns of landscapes affect sediment connectivity is a key factor in understanding the nonlinear behavior of sediment transfer to the outlet. Important questions remain regarding this relationship. For example, to what extent is sediment travel disconnected from the flows that transport sediments? What connections exist between the components of t ...
DOI:
10.1016/j.scitotenv.2018.10.158

19. Enantiomer‐specific measurements of current‐use pesticides in aquatic systems

Author:
Elin M. Ulrich; Patti L. TenBrook; Larry M. McMillan; Qianheng Wang; Wenjian Lao
Source:
Environmental toxicology and chemistry 2018 v.37 no.1 pp. 99-106
ISSN:
0730-7268
Subject:
agricultural land; analytical methods; bifenthrin; concrete; cyfluthrin; cypermethrin; enantiomers; environmental exposure; fipronil; fish; periodicals; permethrin; risk; runoff; screening; sediments; stereoselectivity; toxicity; watersheds; California
Abstract:
... Some current‐use pesticides are chiral and have nonsuperimposable mirror images called enantiomers that exhibit identical physical–chemical properties but can behave differently when in contact with other chiral molecules (e.g., regarding degradation and uptake). These differences can result in variations in enantiomer presence in the environment and potentially change the toxicity of pesticide re ...
DOI:
10.1002/etc.3938
PubMed:
28786535
PubMed Central:
PMC6098700

20. Role of urban surface roughness in road-deposited sediment build-up and wash-off

Author:
Hongtao Zhao; Qian Jiang; Wenxia Xie; Xuyong Li; Chengqing Yin
Source:
Journal of hydrology 2018 v.560 pp. 75-85
ISSN:
0022-1694
Subject:
bitumen; concrete; concrete roads; control methods; particle size; rainfall simulation; runoff; sediments; surface roughness
Abstract:
... Urban road surface roughness is one of the most important factors in estimation of surface runoff loads caused by road-deposited sediment (RDS) wash-off and design of its control measures. However, because of a lack of experimental data to distinguish the role of surface roughness, the effects of surface roughness on RDS accumulation and release are not clear. In this study, paired asphalt and con ...
DOI:
10.1016/j.jhydrol.2018.03.016