This work presented to see the efficiency of nano technology used in terms of chemical named as Terrasil which acts as a modifier and improves the engineering properties of black cotton soil. In India, we see about 51.8 million hectors of land area is covered with black cotton soil which is an expansive soil. It is seen that black cotton soil is very hard when it is dry, and it loses its strength completely when it is wet. Expansive soils are problematic soils worldwide and create problems while constructing structures on it. To improve their properties various methods are adopted. These soils are removed completely or mixed with better quality material or mixed with various additives. This chemical called terrasil is tested by conducting various tests like Proctor test, free swelling test, etc. Soil samples are treated with different percentage of Terrasil 0.9%, 1.1%, and 1.3%. Terrasil gives improved results up to 40% increasing compressive strength of soil. It reduces the swelling property of soil from 60% to 42%.
Soil stabilization, Nano technology, Terrasil, Expansive soil
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