Stablization of expansive soil

Abstract

Expansive soil is prone to large volume changes which are related to changes in water content of the soil. Soil with smectite clay minerals has the most dramatic shrink-swell capacity. This continuous change in soil volume can cause foundation movement and damage to structures built on expansive soil. Remediation of expansive soil with chemicals such as, cement, fly ash, lime, polymer alters the clay mineralogy and reduce the shrink-swell potential thus making it suitable for construction purposes. In this review, various aspects of remediation of expansive soil by using chemicals including polymers are being discussed.