Experimental comparison of electroosmotic consolidation of wenzhou dredged clay sediment using intermittent current and polarity reversal

Fu, Hongtao; Fang, Ziquan; Wang, Jun; Chai, Jinchun; Cai, Yuanqiang; Geng, Xueyu; Jin, Jinqiang; Jin, Fang-yi

doi:10.1080/1064119x.2017.1326992

Cited by 29 publications

(5 citation statements)

References 25 publications

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“…When the electrode (electrode 2) reversed from cathode (in circuit 12) to anode (in circuit 23), the current in the present circuit (circuit 23) dramatically decreased from a high value. This situation was similar to that of the polarity reversal in conventional electroosmosis 34,35 . When the electrode (electrode 2) reversed from anode (in circuit 23) to cathode (in circuit 12), the current in the present circuit (circuit 12) increased rapidly from a low value.…”

Section: Resultssupporting

confidence: 68%

“…However, the calculated total water discharge of E1–E5 was higher than the actual collected total water discharge by 24%, 49%, 22%, 26%, and 13%, respectively. The main reason is that part of the water was consumed by electrode electrolysis of water and water evaporation caused by rising soil temperature 34,37 . The electrification mode of E2 included circuit 12 and circuit 23, and the water discharge from the two circuits can be approximately assumed to come from the soil between electrode 1 and electrode 2 and the soil between electrode 2 and electrode 3, respectively.…”

Section: Resultsmentioning

confidence: 99%

“…This situation was similar to that of the polarity reversal in conventional electroosmosis. 34,35 When the electrode (electrode 2) reversed from anode (in circuit 23) to cathode (in circuit 12), the current in the present circuit (circuit 12) increased rapidly from a low value. Electroosmotic treatment resulted in nonnegligible gradients variation of soil physicochemical parameters.…”

Section: Electric Currentmentioning

confidence: 92%

“…The main reason is that part of the water was consumed by electrode electrolysis of water and water evaporation caused by rising soil temperature. 34,37 The electrification mode of E2 included circuit 12 and circuit 23, and the water discharge from the two circuits can be approximately assumed to come from the soil between electrode 1 and electrode 2 and the soil between electrode 2 and electrode 3, respectively. It can be seen that the calculated water discharge of the soil between electrode 1 and electrode 2 differed significantly from the actual water discharge, which was due to the high current of circuit 12 and the high consumption of water by electrode electrolysis and evaporation.…”

Section: Water Contentmentioning

confidence: 99%

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Electroosmotic strengthening of soft clay under different electrification modes

Sun,

Xu,

Zhang

et al. 2024

Energy Science & Engineering

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Electrification mode is one of the important factors affecting the energy consumption and drainage effect of the electroosmosis method. In this work, a series of laboratory tests were performed to explore the impact of continuous changes in the electric field on the migration of ions and electrons, as well as the migration of electroosmotic flow. The results show that different electrification modes had a significant impact on the current and water discharge. An electrode reversed from anode to cathode, from one circuit to another, is beneficial to drainage, while an electrode reversed from cathode to anode, from one circuit to another, is unfavorable to drainage. The drainage effect of the specific cyclic and progressive electroosmosis (CPE) is not as good as the conventional electroosmosis method. However, combining the two electrification modes can further enhance the shear strength of the soil near a designated electrode. The generation of transverse cracks in soil is mainly due to the drainage difference caused by the electroosmotic flow, which is caused by the adjacent electric field at that location. When the electroosmotic flow is strong, longitudinal cracks will occur in the soil along the strongest electroosmotic flow path. In practical in situ engineering applications, the electrification mode of CPE will be more energy‐efficient than conventional electrification modes with the same processing time.

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Section: Resultssupporting

confidence: 68%

Section: Resultsmentioning

confidence: 99%

Section: Electric Currentmentioning

confidence: 92%

Section: Water Contentmentioning

confidence: 99%

See 2 more Smart Citations

Electroosmotic strengthening of soft clay under different electrification modes

Sun,

Xu,

Zhang

et al. 2024

Energy Science & Engineering

View full text Add to dashboard Cite

show abstract

“…Improving soils in a time-efficient and cost-effective manner can not only ensure a safer, more reliable, efficient, sustainable, and resilient infrastructure but also offer great value to investors, contractors, and users [1,4,47,34]. Prefabricated vertical drains (PVDs) are widely used in practice by creating short horizontal drainage paths to accelerate the process of soil consolidation [5,8,12,22,23,39,43,45].…”

Section: Introductionmentioning

confidence: 99%