• G SURESH
• CH SUDHA RANI
• Jayakumar Kannali2

Expansive soils or Black Cotton soils are known for highly swelling & shrinking behaviour with moisture content variations. These soils belong to Clay group and are not reliable for construction or raising structures. These disadvantages can cause remarkable economic losses, as well as act a source of risk to the population. In this study an attempt has been made for improvement of geotechnical properties of selected expansive soil by addition of Bio-Enzymatic mixture (Terrazyme). The Bio-Enzyme is a liquid additive, when mixed with water and added to soil alters the engineering properties. The effectiveness of Bio-Enzyme depends upon the type of the soil and dosage of enzyme used for the intended purpose. The Bio-Enzyme acts on the soil and reduces the voids between soil particles and minimizes absorbed water in the soil thereby fetching for attainment of maximum compaction. In the present works, series of tests have been conducted on selected expansive soil with different dosages of Bio-Enzyme (Terrazyme) and varying curing periods. The laboratory test results have shown much improvement in its fatigue behaviour and its strength in terms of California Bearing Ratio (CBR).

"STABILIZATION OF AN EXPANSIVE SOIL USING BIO-ENZYME", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 6, page no.338-345, June 2019, Available :http://www.jetir.org/papers/JETIR1906O51.pdf

"STABILIZATION OF AN EXPANSIVE SOIL USING BIO-ENZYME", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 6, page no. pp338-345, June 2019, Available at : http://www.jetir.org/papers/JETIR1906O51.pdf