Experimental Study of Electro-Osmosis in Kaolin Clay
Electro-osmosis appears to be an effective technique for dewatering and consolidation of clayey soils such as mineral waste tailings and dredged sediments. In this study, electro-osmosis in Kaolin clay was investigated to monitor the change of various parameters during the consolidation process. A laboratory-scale apparatus was developed, and the electrical current, effluent flow, as well as voltage, pH value and moisture content were measured at different positions of the soil column with different density. The test results showed that the direction of electro-osmotic flow was from the anode to cathode, and the density of soil samples pay a significant role in effluent flow rate, resistivity and electro-osmosis coefficient. The resistivity near electrode increases much faster then inner soil sample. The remarkable reduction of moisture content in soil sample was observed during electro-osmosis process.
Electro-osmotic flow Effluent pH Kaolin clay Dewatering Resistivy
HU Li-ming HONG Heqing WU Weiling
State Key Laboratory of Hydroscience and Engineering, Department of Hydraulic Engineering, Tsinghua University, Beijing 100084, China
国际会议
徐州
英文
44-47
2007-10-22（万方平台首次上网日期，不代表论文的发表时间）