ENHANCING THE BEARING CAPACITY OF BLACK COTTON SOIL BY USING COPPER SLAG, PLASTIC AND CALCIUM CARBIDE

Abstract

Expansive black cotton soils are prevalent globally and pose a major threat to infrastructure integrity. Soil stabilization means improvement of the bearing capacity of soil can be enhanced through controlled compaction, proper proportioning, or the incorporation of appropriate admixtures or stabilizers. Due to their significant swelling and shrinkage properties, black cotton soils pose challenges for highway engineers. So in this research, a material such as copper slag, plastic and calcium carbide was used to improve the strength properties of soil. California Bearing Ratio and Standard Proctor test were conducted with different percentages of copper slag, calcium carbide (10%, 25%), and Plastic bottle strips (1.0%, 2. %). The characteristics of black cotton soil have been observed to change when mixed with copper slag, calcium carbide and plastic bottle strips are suitably enhanced. For this research work vane share test, standard proctor test, unconfined compression test, sieve analysis, and pychnometer test were conducted. We had performed a vane share test and found the shared strength of selected soil was increased from 5.23×10-4 N/mm2 to 10.24×10-4 N/mm2