Utilization of Industrial Waste as Soil Stabilizer to Enhance Direct Shear Strength

Abstract

A problem that often occurs in industrial areas is roads damage that are caused by the low carrying capacity of their subgrade as well as by over capacity of heavy vehicles passing through those roads. A lot of waste that is produced in industrial areas, which also another problem, can be used as soil stabilizers. This study proposed a method using industrial waste as stabilization material to improve the carrying capacity of the soil. Testing materials are prepared for both original and stabilized soil using three types of industrial waste, namely Silica Sand waste, and Dust Sand Foundry. One of mechanical property tests, i.e., direct shear test, was conducted with different percentage of waste for each sample. Result showed that there was 36.8% increase in the internal shear angle of the modified soil with 2.5% Dust Sand Foundry additives without the addition of Silica sand waste compared to the internal shear angle of the original soil.