Evaluation of Effect of Chemicals on Hydraulic Properties of Sand - Bentonite Mixtures

The main purpose of this research is evaluation of effect of chemicals on permeability of sand- bentonite mixtures. the coefficients of permeability of sand- bentonite mixtures in water, solutions of sodium and calcium chlorides, sodium hydroxide, acetic acid, methanol and carbon tetrachloride were calculated using parameters obtained in 1- d consolidation test and terzaghis theory. at each void ratio permeability of samples in water is the lowest and that for carbon tetrachloride is the highest. for all fluids the permeability index ck is decreased as the percentage of sand is increased. the largest ck belongs to the samples tested in water and the smallest c^ belongs to the samples tested in carbon tetrachloride.