The potential of clay containing 05% sewage sludge ash (SSA) is assessed for use as a landfill liner-soil material. Low temperature Nadsorption, batch adsorption, permeability, and unconfined compressive strength tests are performed to evaluate pore structure, adsorption capacity, hydraulic conductivity, and unconfined compressive strength of the clays. The pore size distribution of the modified clay containing SSA is mainly composed of micropores (
