Stabilization of Black Cotton Soil by using Bio-Enzyme

A large part of central India and south India are covered with black cotton soil such soil need to improved. The conventional methods are time consuming are not economically feasible. Hence there is need to discover the other possible ways to satisfy the performance as well as economical criteria. The stabilization soil with bio-enzymes is a revolutionary technique which is environment friendly, cost effective and convenient to use. There are many bio enzymes available for soil stabilization such as DZ-1X, Renolith, perma-zyme, terra-zyme and fujibeton. Bio-enzyme improves CBR value of soil. Increases strength of soil and decreases free swell index and cracks formation. It is economical and also reduces the pavement thickness. Bio-enzymes are largely use for stabilization of soil of roads. The present study deals with the effect of DZ-1X, a bio-enzyme on shear strength and CBR value of expansive soil. Their efficiency depends upon the amount of dose type of soil available and field conditions. The use of bio-enzyme in soil stabilization is not very popular due to lack of awareness between engineers and non-availability of standardized data.