Investigation of Consolidation-Induced Solute Transport. II: Experimental and Numerical Results

摘要: This paper presents an experimental and numerical investigation of consolidation-induced solute transport. Diffusion large strain consolidation tests were performed on composite specimens kaolinite clay consisting upper uncontaminated layer a lower contaminated with potassium bromide. Experimental measurements effluent concentration, mass outflow, final concentration profiles obtained for variety initial, boundary, loading conditions, including unload/reload. Numerical simulations conducted using computational model in which transport occurs by advection, dispersion, sorption is consistent temporal spatial variations porosity seepage velocity the consolidating layer. Large strains taken into account as well variation effective diffusion coefficient nonlinear nonequilibrium effects. The are good to excellent agreement measurements. Results indicate that, depending advection can make important contributions outflow. Thus, both mechanisms should be considered analyses involving soft clays undergoing volume change. also that effects not significant materials test conditions used this study.