Experimental Study on the Influence of pH on Drainage of Soft Soil by Anode Following Electro-Osmosis Method

Long Zhang

doi:10.6919/ICJE.202508_11(8).0011

Authors

Long Zhang

DOI:

https://doi.org/10.6919/ICJE.202508_11(8).0011

Keywords:

Electro-osmotic Drainage Consolidation; Anode Following; The Coefficient of Electro-osmosis; Intermittent Electrification; Soil pH.

Abstract

Using a self-made electro-osmosis device, electro-osmosis experiments were conducted on soft clay under different electrification conditions. The drainage volume, drainage rate, electro-osmotic coefficient, water content, and shear strength were comparatively analyzed. The research results indicate that the soil pH has a significant impact on the electro-osmosis effect. Specifically, the electro-osmosis effect increases with the rise in pH, and the soil in an alkaline environment exhibits a higher electro-osmotic coefficient. Under the same conditions, the soil strength at the cathode of the anode following group is significantly higher than that of the non-anode following group, where the soil at the cathode exhibits almost no shear strength. The advantage of intermittent electrification becomes apparent only in the later stages of electro-osmosis, but its energy consumption coefficient is lower than that of the continuous electrification group.

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