Results 121 to 130 of about 242 (152)
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Experimental study on settling velocity of soil particles in dredged slurry
Marine Georesources & Geotechnology, 2016ABSTRACTStudying sedimentation and consolidation of dredged slurry has significant implications to the design of storage yard and subsequent ground improvement. In this study, settling velocity of soil particles in dredged slurry during sedimentation and consolidation processes was investigated using an improved multilayer extraction sampling (MES ...
Nan Zhang +4 more
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Journal of Environmental Management, 2023
A novel method, targeted pretreatment and vacuum filtration (TP-VF), is introduced and validated in this study. TP-VF offers a one-step solution for efficiently dewatering dredged slurry (DS) characterized by heavy metal contamination, high salinity, and excessive moisture content. This innovative approach combines targeted pretreatment (TP) and vacuum
Silin, Wu +6 more
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A novel method, targeted pretreatment and vacuum filtration (TP-VF), is introduced and validated in this study. TP-VF offers a one-step solution for efficiently dewatering dredged slurry (DS) characterized by heavy metal contamination, high salinity, and excessive moisture content. This innovative approach combines targeted pretreatment (TP) and vacuum
Silin, Wu +6 more
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Laboratory Simulation of Chemical Evaporation from Dredge-Produced Sediment Slurries
Environmental Engineering Science, 2004A laboratory-scale apparatus and associated chemodynamic transport model was tested with samples of field-contaminated sediment containing high concentrations of low volatility polyaromatic (PAHs) and high volatility petroleum hydrocarbons (BETXs). The experiments were designed to measure the flux to air while attempting a realistic simulation of the ...
Louis J. Thibodeaux +5 more
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Improved Vacuum Preloading Method for Consolidation of Dredged Clay-Slurry Fill
Journal of Geotechnical and Geoenvironmental Engineering, 2016AbstractAn improved vacuum preloading method was developed to consolidate clay-slurry fill that is hydraulically placed in seawater for land reclamation. This method adopted both a vacuum and an air-pressurizing system. In the vacuum system, a new connector to connect each prefabricated vertical drain (PVD) directly to a horizontal vacuum pipe is used ...
Jun Wang +6 more
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Effect of a sealed connector on the improvement of dredged slurry under vacuum preloading
Proceedings of the Institution of Civil Engineers - Geotechnical Engineering, 2019For ground improvement of dredged slurry in a land reclamation area in China, a membrane–connector vacuum preloading method that integrates membrane-based and membrane-free methods was studied by laboratory tests. In this method, airtight membranes over the surface of the dredged slurry are used to maintain the vacuum pressure and prefabricated ...
Peng Wang, Fan Yu, Yuefu Zhou, Jun Wang
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Effects of pressurizing timing on air booster vacuum consolidation of dredged slurry
Geotextiles and Geomembranes, 2020Abstract Air booster vacuum preloading is a newly improved method applied in land reclamation projects. Highly pressurized air can provide an additional pressure difference between the prefabricated vertical drain (PVD) and injection point, thereby increasing the hydraulic gradient and generating small fractures that can improve the soil permeability
Rila Anda +7 more
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Vacuum Preloading Combined with Intermittent Electro-Osmosis for Dredged Slurry Strengthening
Geotechnical Testing Journal, 2019Abstract Vacuum electro-osmosis is a useful method for strengthening dredged slurry; however, this technique is not widely applied because of its high power consumption and decreased efficiency in the later stages. Appropriate current intermittence is an important approach to improving the efficiency and reducing the power consumption of
Feiyu Liu +8 more
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Effects of Column Diameter on Setting Behavior of Dredged Slurry in Sedimentation Experiments
Marine Georesources & Geotechnology, 2015This article investigates the influence of dimensions of a settling column on the settling mode and the settling rate. End conditions of the settling stage in the hindered settling were also analyzed. It was found that the settling mode in a column with a smaller diameter tends to be consolidation settling.
Yu-Feng Gao +3 more
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Environmental Science and Pollution Research
Addressing the substantial yearly production of waste dredged slurry with high water content, it is imperative to adopt effective technical treatments for sustainable development. This paper establishes that the curing-flocculation-vacuum filtration (C-F-VF) method efficiently converts high-water content dredged slurry into back-fill soil, achieving ...
Silin, Wu +4 more
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Addressing the substantial yearly production of waste dredged slurry with high water content, it is imperative to adopt effective technical treatments for sustainable development. This paper establishes that the curing-flocculation-vacuum filtration (C-F-VF) method efficiently converts high-water content dredged slurry into back-fill soil, achieving ...
Silin, Wu +4 more
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Vacuum consolidation of dredged slurry improved by horizontal drainage-enhanced geotextile
Geosynthetics InternationalThe vacuum consolidation behavior of dredged slurry improved by horizontal drainage-enhanced geotextile (HDeG) application was investigated. For comparison, vacuum consolidation tests using a prefabricated vertical drain (PVD) and layered prefabricated horizontal drains (PHDs) were conducted. Based on the test results, it was found that by using HDeG,
J. Wang +5 more
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