A Comparable Study on Stabilization of Sub Grade Soil Using Sugar Cane Bagasse Ash and Rice Husk Ash

Abstract

Soil stabilization is used to strengthen road surfaces by enhancing the weight bearing capabilities of in-situ subsoil, sands and other waste materials. The research focuses on three main objectives, the first one is improving the properties of the soil at the construction site so it doesn't bend under the pressure from the weight of the structure, while the other important part is try to use other materials which can do the same job, one of these materials is the rice husk ash and sugar cane bagasse ash, its production is increasing yearly and annually 20 million tons are produced, which quite large amount. Rice husk ash consist of 85%-90% silica, this is why it is a great replacement for silica in soil stabilization, silica is considered to be a great binding agent along with cement also, however due time its price is increasing, so new materials are used for the purpose of geotechnical works. There are three objectives of the research; one is to determine the Atterberg limits, maximum dry density, optimum moisture content and maximum shear strength of the soil without additives, another is to determine the maximum dry density and optimum moisture content of the soil with 0 %, 5%, 10%, and 15% of sugar cane bagasse ash and rice husk ash and lastly compare the results between the sample with additives and the sample without additives to determine what is the change that occurred.