STABILIZATION OF BLACK COTTON SOIL USING COCONUT COIR

Abstract

Black cotton soil is the cohesive soil in which it having less supporting power hence it needs to face some of the hindrances during construction of the structure like a Building, Bridges, embankments and Roads. Problems are like settlement, permeability, and shear strength and we need to increase strength of soil. We have many methods but cost effective eco-friendly easily available. We are advised to mix the coconut coir to the soil during construction of engineering projects. By various percentages, black cotton soil less bearing capacity compared to red soil, sandy soil etc. In highly metropolitan area consist of G+12,and G+15 building, instead of replacing the poor soil, mix the some amount of coir fiber to the soil material, hence it resist the load coming from existing structure. and stabilization consist of many methods chemical and mechanical methods in chemical stabilization various chemicals are use to stable the soil such as lime, silica, and aluminum powder etc. and mechanical stabilization consist of by using various mechanical devices such as compactors, roll rollers tampers, etc to improve the geotechnical properties of soil soil. Many tests are carried out on soil to check the behavior of soil during the elastic loading, variation in present of moisture content and also shape, size and texture, gradation of soil to engineering and HRB classification of soil. Least water content require to stay in plastic mode, such as liquid limit, plastic limit, vane shear tests, sieve analysis test, specific gravity test, standard proctor test, permeability test and unconfined compression test.