STABILIZATION OF SUB GRADE SOIL BY USING FOUNDRY SAND WASTE

Due to various construction development projects undertaken all over the world there is a substantial increase in the production of waste materials like concrete, fly ash, plastic, rice husk, foundry sand etc. which create disposal problems. Foundry waste sand is produced in large quantity in foundry industries and is disposed in open land. Therefore use of foundry waste sand in foundation of buildings and in road constructions to improve bearing capacity of soil and to reduce the area of open land needed f or its disposal and to preserve environment through resource conservation.Soil is a base of a structure which supports the structure from beneath and distributes the load effectively. The present study deals with stabilization of soil by using foundry was te sand in different proportion in original soil. In this study laboratory tests such as Atterberg’s Limit Test, Direct Shear Test and California Bearing Ratio (CBR) Test were carried out for both modified and unmodified soil. The results show that Maximum Dry Density and CBR values were improved after addition of foundry waste sand to the soil.