Influence of High Voltage Gradients on Electrokinetic Dewatering for Wenzhou Clay Slurry Improvement

Fu, Hongtao; Yuan, Lili; Wang, Jun; Cai, Yuanqiang; Hu, Xiuqing; Geng, Xueyu

doi:10.1007/s11204-019-09555-0

Cited by 14 publications

(2 citation statements)

References 29 publications

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“…It was observed that a maximum settlement of 12.36 mm occurs in the case of coupled loading of 4V+4kg/cm 2 in comparison to other loading conditions. Based on the past studies, the maximum compression occurs for a voltage gradient of 1V/cm, same trend was also observed in the case of 4V+4kg/cm 2 in the present study, equivalent to a voltage gradient of 1V/cm [33][34][35][36].…”

Section: Axial Deformation Vs Timesupporting

confidence: 90%

Consolidation Assessment of Marine Clay Using Electrokinetic Coupled with Constant Load

Singh¹,

Paramkusam²,

Prasad³

2022

cea

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In Marine clays, the consolidation phenomenon is a significant issue of concern. For this, an innovative electrokinetic consolidation method was adopted by coupling the conventional consolidation technique with a constant voltage gradient. A series of tests were performed on reconstituted marine clay samples for constant loading intensity of 4kg/cm² coupled with a constant DC voltage of 2, 4 and 6V. Various parameters such as deformation, void ratio, current, pH, voltage and moisture content were continuously monitored to compare with test results of conventional Incremental loading (IL) and constant loading (CL) techniques. In the case of electrokinetic (EK) coupled loading, with an increase in voltage gradient, the values obtained for voltage and current were also increased to maximum and then decreased afterwards. Microfabric changes were also visible in soils collected at anode and cathode, which were evidenced with the images of scanning electron microscopy (SEM) data obtained before and after EK consolidation tests when compared with original marine clay. The constant loading intensity of 4kg/cm 2 with a 4V electric gradient resulted in higher compression and better consolidation characteristics than other loading conditions.

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Section: Axial Deformation Vs Timesupporting

confidence: 90%

Consolidation Assessment of Marine Clay Using Electrokinetic Coupled with Constant Load

Singh¹,

Paramkusam²,

Prasad³

2022

cea

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“…There are many ways to promote EF, such as suitable voltage gradients [ 14 ], stepwise movement of anode [ 15 ], and incorporating with vacuum preloading or other methods [ 16 ]. However, the latter two methods require high labour intensity in practical engineering applications.…”

Section: Introductionmentioning

confidence: 99%

Electroosmotic flow in soft clay and measures to promote movement under direct current electric field

Sun,

Zhang,

Demarscho Eugene

et al. 2024

PLoS ONE

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Electroosmosis has been proposed as a technique to reduce moisture and thus increase the stability of soft clay. However, its high energy consumption and uneven reinforcement effect has limited its popularization and application in practical engineering. This paper presents the results of some electrokinetic tests performed on clayey specimens with different electrification time and anode boundary conditions. The results indicate that the timing of the formation of electroosmotic flow (EF) by the water originally contained in different soil cross sections, from the anode to the cathode, varies. The measuring soil cross section nearest the anode first reached the limiting water content of 22%±3% and electroosmosis had to be stopped. Water injection into the anode during electroosmosis enhanced further drainage of other four measuring soil cross sections until the second soil cross section from the anode reached the limiting water content of 30%±2%. Electroosmosis with water injection into the anode technique provides more uniform reinforcement, increasing EF, and environmental protection. The experimental results highlighted the relevant and expected contribution of water injection into the anode on the effectiveness of the electroosmotic treatment as a soft clay improvement technique.

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Effects of Chemical Solutions and Flexible Electric Geotextiles on Electroosmotic Consolidation of River Silt

Zhang,

Ge,

Zheng

et al. 2024

Soil Mech Found Eng

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Influence of High Voltage Gradients on Electrokinetic Dewatering for Wenzhou Clay Slurry Improvement

Cited by 14 publications

References 29 publications

Consolidation Assessment of Marine Clay Using Electrokinetic Coupled with Constant Load

Consolidation Assessment of Marine Clay Using Electrokinetic Coupled with Constant Load

Electroosmotic flow in soft clay and measures to promote movement under direct current electric field

Effects of Chemical Solutions and Flexible Electric Geotextiles on Electroosmotic Consolidation of River Silt

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