Influence of voltage and temperature on electro-osmosis experiments applied on marine clay: Fid-Bau Portal

Influence of voltage and temperature on electro-osmosis experiments applied on marine clay

Xue, Zhijia / Tang, Xiaowei / Yang, Qing

AbstractA series of electro-osmosis experiments were conducted to explore the effect of voltage and temperature on the electro-osmosis properties of marine clay, including current, average consolidation degree, horizontal shrinkage, shear strength, water content, and anode corrosion. As shown for the resistivity of marine clay, the temperature increased when the electro-osmosis phenomenon occurred. From mechanical and electro-chemical point of view, this study explained the differences in the average consolidation degree and horizontal shrinkage under various experimental conditions. Although a voltage loss appeared due to the anode corrosion, the high voltage and temperature were still found beneficial for the reduction of the soil water content and the increase of shear strength. Furthermore, the electro-osmosis effect at high voltage included the contribution of joule heating.

Highlights•The electro-chemical active of clay samples increased with voltages and temperatures.•The deformation of clay samples were influenced by the voltage and temperature.•The water content decreased with increasing voltage and temperature, and the shear strength exhibited an opposite trend.•The outstanding effect of high voltage contained the contribution of joule heating.