Abstract
The soil stabilization using Bio-Enzymes becomes an innovative approach compared with conventional methods used for subgrade improvement. The application of these bio-enzymes in small dosages with soil can improve its engineering behavior. The factors responsible for total efficiency of enzymatically treated soil will be the amount of dose, soil type, and field circumstances. The present experimental investigation aims to investigate the impact of varying dosages of two different bio-enzymes DZ-2X and TerraZyme on strength characteristics i.e. (UCS) of black cotton soil with ageing period of (1, 7, 14, 24 and 28) days. The investigation will further resulting in finding the ecofriendly and cost effective material with great application in the subgrade improvement. The results of treated soil with different dosages of DZ-2X and TerraZyme was compared with results of untreated soil to investigate the optimum dosages of Bio-enzymes (DZ-2X and Terrazyme) and effect of ageing period in strength gain. The results shows improvement in strength values in both types of enzyme treatment compared to natural soil. The optimum values of DZ-2X and TerraZyme for treatment was found around 0.091 ml/kg and 0.098 ml/kg respectively. The maximum strength increase will be 131.39% and 112.89% when compared to natural soil. The overall approach will lead to sustainability and economy towards subgrade stabilization.
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