COMPRATIVE STUDY OF REINFORCED SOIL OF BIDAR DIRSTIC WITH GEOGRID-1, GEOGRID-2 & GEO-MEMBRANE

Road pavements are vulnerable (weak) to soil performance because the foundation of the pavement sub-grade soil is most important element. And if the sub-grade layer of pavement consists of Black cotton soil and lateritic soil, due to changes in moisture content and subsequent shrinkage and swelling, it undergoes failure. Thus, for the construction on such type of soil it is required to improve the engineering properties of soil or to replace the soil itself. Replacing the existing soil might not be a practical and feasible option, thus it is required to stabilize the soil with suitable stabilizer. However the selection of stabilizer depends upon the type of sub-grade soil, type of soil improvement desired, availability of stabilizer, the required strength and durability of stabilized layer, various stabilizing techniques, environmental conditions and the most important cost factor. This paper reviews the work of various researchers on stabilization of soil and use of geo-synthetic materials in improving its strength.