Results 111 to 120 of about 242 (152)
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Dewatering of dredged slurry by horizontal drain assisted with vacuum and flocculation
Geosynthetics International, 2022This study proposes a new method using the combination of flocculation and prefabricated horizontal drain (PHD) assisted with vacuum pressure for rapid dewatering of high-water-content dredged slurry. First, to demonstrate the superiority of using PHD over the more commonly used prefabricated vertical drain (PVD), experiments were conducted to compare
H. Pu, D. Khoteja, Y. Zhou, Y. Pan
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Sedimentation Behavior of Four Dredged Slurries in China
Marine Georesources & Geotechnology, 2012Sedimentation model tests were carried out on four clays in China for investigating the sedimentation behavior of slurries. The sedimentary process can be divided into fluid state and consolidation state. The consolidation state of slurries can be divided into Non-Terzahi soil and Terzaghi soil.
Gui-Zhong Xu +3 more
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Study of Sedimentation and Consolidation of Soil Particles in Dredged Slurry
Geoenvironmental Engineering, 2014Sedimentation and consolidation of soil particles in dredged slurry is very complex since the rule of it is not explicit. A modified experiment method called multilayer extraction sampling is adopted in this study. The volume distribution of soil particles can be determined first and the average velocity of soil particles for different size group of ...
Nan Zhang, Wei Zhu
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Permeability Coefficients of Dredged Slurries at High Void Ratio
Applied Mechanics and Materials, 2012According to sediment rates of slurries in initial stages, permeability coefficients of samples applied in this article is obtained. It shows that the permeability coefficients of dredged slurry determined from sedimentation tests are feasible. In bi-logarithm coordinates, permeability coefficients of dredged slurries increase linearly with the ...
Gui Zhong Xu +3 more
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Vacuum-induced lateral deformation around a vertical drain in dredged slurry
Geosynthetics International, 2022The horizontal strain in the vacuum preloading/dewatering of dredged slurry is significant to the apparent clogging effect and estimation of surface settlement around a drain; however, it has seldom been investigated in previous studies. In this study, a vacuum consolidation model test assisted by particle image velocimetry (PIV) technology was ...
Y. Zhou +4 more
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Assessment of strength and dewatering efficiency in straw-reinforced dredged slurry
Construction and Building MaterialsGuizhong Xu, Weijuan Geng
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Permeability Behavior of High-Moisture Content Dredged Slurries
Marine Georesources & Geotechnology, 2015In order to understand permeability behavior of high-moisture content dredged slurry in a storage yard, this article utilizes two modified oedometers to conduct consolidation and permeation tests on various kinds of high-moisture content dredged slurries in China.
Gui-Zhong Xu, Yu-Feng Gao, Changjie Xu
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Rheological behavior of dredged slurries at high water contents
Marine Georesources & Geotechnology, 2016ABSTRACTEach year in the world, there is significant amount of dredged slurries generated during geotechnical jobs. In the slurry storage process, the rheological behavior is a key factor affecting the motion of dredged slurries. To gain better understanding on this behavior, experiments on dredged slurries with different liquid limits are conducted ...
Gui-Zhong Xu +3 more
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Compression Behavior of Dredged Slurries at High Water Contents
Marine Georesources & Geotechnology, 2014Oedometer tests were carried out using modified oedometer apparatuses on three different kinds of dredged slurries. Test results show that the compressibility of dredged slurries is influenced by initial water content when the initial water content is lower than upper limit water content.
Xu, Guizhong +4 more
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Temperature effects on dredged slurry performance under vacuum preloading
Canadian Geotechnical Journal, 2020Under appropriate temperature conditions, vacuum preloading can effectively accelerate the rate of soil consolidation. If the temperature is low (30 °C), vacuum preloading is less effective at consolidating the soil. If temperature is extremely high, vacuum preloading is less efficient at consolidating the soil due to the consummation of excess energy
Wang, Jun +7 more
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