Abstract
The development of ph gradients in the electrokinetic processingof soils is investigated. An analytical model, based on the nernst-planck equations, is presented to evaluate the acid/base distributions and the flow patterns generated in electro-osmotic flow. One-dimensional laboratory experiments with georgia kaolinite demonstrated the validity of the predictions of the analytical model. Effects of the ph gradients on the efficiency of the process and soil propertiesare discussed. Results of studies are reviewed based on this new understanding of the acid/base distributions. This paper appears in transportation research record no. 1288, Geotechnical engineering 1990.