Abstract
AbstractBio-stabilization aims at enhancing the engineering properties of soils through enzymatic activity. The current work focuses to understand the modifications in mechanical properties of laterite soil due to enzymatic stabilization. Laboratory tests were conducted on oven-dried laterite soil to determine its basic properties. The different dosages of enzyme reflected in the present analysis are 100 ml/m3 and 200 ml/m3, respectively. The mechanical properties investigated in the present work are shear strength and permeability characteristics since they represent significant parameters in the settlement and failure analysis of soil. The effect of microbial activity was also studied for curing periods of 0, 7 and 14 days on the treated soil. It was observed from the detailed experimental investigations that bio-stabilization helps in improving the Bearing ratio of enzyme-treated laterite soil. The experimental studies also indicated a decrease in permeability with an increase in dosage as a result of bio-stabilization. The biologically improved soil can find applications in many civil engineering projects such as canal linings, embankment construction, etc.KeywordsPermeabilityCBRTerrazymeLaterite
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