Soil Stabilization using Coffee Husk Ash and Lime

Abstract: Paddy soils pose significant construction challenges due to their unique physical properties. High water content, low bearing capacity, and high compressibility make them prone to settlement and deformation issues. Additionally, paddy soils have low shear strength, high plasticity index, and low permeability, increasing the risk of landslides, foundation instability, and waterlogging. Hence, there exists a need of improving the engineering properties of soil before using for construction by soil stabilization techniques. Here we are going to use coffee husk ash and lime as stabilizer in various proportion. The main objective of this study is to investigate the effect of coffee husk ash and lime on the engineering properties of paddy soil such as strength, Atterberg’s indices and CBR values. Coffee Husk Ash was added in two proportions, 10% and 20% with three proportions of lime, 4%, 5%, 6%