Stabilization of Expansive Soil by using Wheat Husk Ash and Granulated Blast Furnace Slag

Expansive soil shows major volumetric changes due to change when comes in contact with moisture content. This causes major damage to property constructed on it. These expansive soils contain minerals such as montmorillonite that are capable of absorbing water. When they absorb water volume of the soil increases. There are different methods to improve the strength of the soil mechanical compaction, dewatering and earth reinforcement have been found to improve the strength of the soils, and other methods like stabilization using admixtures are more advantageous. The different admixtures available are wheat husk ash, lime, cement, blast furnace slag etc. This study focused on the use of the industrial waste material GBS and wheat husk ash. GBS is obtained from blast furnace slag, a by-product from the manufacture of iron. By adding granulated blast furnace slag and wheat husk ash reducing water content and increasing dry density and also improves the strength. The results are more effective for optimum percentage (9%) of granulated blast furnace slag and wheat husk ash.