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Volume 45 Issue 10
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ZHOU Jian, JIANG Yicheng, ZHU Zeming, GAN Qiyun. Theoretical and experimental studies on interfacial resistance of electro-osmotic consolidation for soft ground improvement[J]. Chinese Journal of Geotechnical Engineering, 2023, 45(10): 1995-2003. DOI: 10.11779/CJGE20220838
Citation: ZHOU Jian, JIANG Yicheng, ZHU Zeming, GAN Qiyun. Theoretical and experimental studies on interfacial resistance of electro-osmotic consolidation for soft ground improvement[J]. Chinese Journal of Geotechnical Engineering, 2023, 45(10): 1995-2003. DOI: 10.11779/CJGE20220838
shu

Theoretical and experimental studies on interfacial resistance of electro-osmotic consolidation for soft ground improvement

  • 1.

    Coastal and Urban Geotechnical Engineering Research Center, Zhejiang University, Hangzhou 310058, China

  • 2.

    Zhejiang Urban Underground Space Development Engineering Research Center, Zhejiang University, Hangzhou 310058, China

  • 3.

    Zhejiang Jiantou Innovation Technology Co., Ltd., Hangzhou 310012, China

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  • Received Date: July 04, 2022
  • Available Online: March 05, 2023
    Graphical Abstract
    • Abstract
  • The electro-osmosis has been applied experimentally in the fields of ground improvement, silt dredging and heavy metal pollution remediation. However, the potential loss at the clay-electrode interface during electro-osmosis consolidation is high, resulting in high energy consumption. In this study, the reaction process at the clay-electrode interface is analyzed from an electrochemical perspective to explain the mechanism of interfacial resistance. Based on the interfacial resistance model, the indoor electro-osmotic tests are carried out using metallic electrodes (copper) and electrodes of electro-kinetic geosynthetic to study the changes in the interface resistance under long-term energization. The results show that the interfacial resistance model can be used to analyze the mechanism of interfacial resistance change under long-term electroosmotic conditions. The total interfacial resistance is influenced by the cathodic interfacial resistance at the early stage of energization, and at the later stage of electroosmosis, it is more influenced by the anode resistance. The interfacial resistance is an important influence on the efficiency of electro-osmotic drainage. Therefore, it should be monitored and used as a control index for electro-osmotic design in the project.
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    • References (23)
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