Compacted natural clay soils are used as liners and covers in waste containment facilities. Liners are generally made of compacted natural inorganic clays or clay soils. The liner is one of the most important elements on a waste disposal landfill. Clay soils are used for constructing landfill liners because they have low hydraulic conductivity and can attenuate organic and inorganic contaminants. In the absence of impermeable natural soils, compacted mixtures of bentonite and soil are used to form barriers to fluid transmission. The shear strength and unconfined compressive strength may have influence over the hydraulic barrier which is the indicator of the performance of the liner. Laboratory tests are conducted on clay soil samples mixed with Microsilica in different proportions to demonstrate to demonstrate the increase in the strength of compacted clay soil liners and covers. The strength behavior observed in this study of clay is used to evaluate the performance of clay soil with and without mircosilica admixture addition.
clay soil, liner, strain, stress, Unconfined Compressive strength
