Transparent model tests on displacement field measurement of soft ground reinforcement by electro-osmotic chemical method

Chemical electro-osmosis is one of new technologies to increase the electro-osmotic efficiency and enhance the reinforcing effects by adding chemical solution through the electrode. Based on one new transparent clay material and PIV technology, model tests on the soft ground reinforcement by chemical electro-osmosis method are carried out. The internal displacement field and drainage are measured, and the reinforcement effects influenced by voltage gradient, electro-osmotic duration, chemical solution concentration, and other factors are discussed and analyzed. Under this model test condition, the results show that the current peak value increases by about 35%, and the drainage rate increases by about 30% under every 0.2 V/cm increase of the voltage gradient. The addition of chemical reagent can reduce the effective resistance by 40%. Every 0.5 mol/L increase in the concentration of the reagent, the average increase in the peak rate of the drainage rate is 25%.