STABILIZATION OF BLACK COTTON SOIL USING GRANITE WASTE

Abstract

Black cotton soil is highly expansive soil due to the presence of montmorillonite. Montmorillonite gives high swelling and high shrinkage properties to the soil. It reduces the stability of black cotton soil. The project deals with the stabilization of black cotton soil using granite waste. Stabilization means improving the engineering properties of a soil using admixtures. On specific engineering projects, soil additives may help to enhance soil properties, prepare the ground for shallow foundations, and stabilize slopes. Addition of granite waste is one way of improving the soil. Granite waste is a type of solid waste material that is obtained from granite crushing industries. Disposal of such waste materials creates a lot of problems to the environment and public. Considering the aspect an experimental study was conducted on locally available expansive soil by mixing it with granite waste. This paper presents the variation of index and engineering properties of expansive soil such as liquid limit, plastic limit, plasticity index, compaction characteristics, California bearing ratio when it is mixed with different percentages (0%,10%,20%,30%) of granite waste and the results were found that up to the addition of 10% of granite waste there is an increase in strength properties beyond it is not effective.