Stabilization of Black Cotton Soil Using Bioenzyme, Lime and Fly Ash

After performing the entire test on BC soil in laboratory with the addition of different stabilizing agents some of the following conclusions are drawn as below, i.After addition of bioenzyme, unsoaked CBR values are significantly increase with the increase in curing period and also with increase in amount of dosages. ii.Bioenzyme decreases liquid limit, plastic limit and plasticity index of soil after 1 to 4 weeks of curing period and also with the amount of dosages. The mix becomes very stiff after weeks of curing. iii.As increase in curing period and dosages of bioenzyme, the MDD of treated soil increases and OMC is observed to be decreasing. iv.Unsoaked CBR values gradually increase with the increase in lime addition up to 44.55% for lime content 4% so, the optimum lime content is observed at about 4%. v.Addition of lime with the soil shows that, Plasticity index decreases with increase in lime content up to 2 %. vi.MDD of treated soil is increases up to 2% and then decreases with lime content and OMC is observed to be reverse of MDD result. vii.The Increase in Unsoaked CBR values with the increasing percentages of fly ash and then decreases after 30%. viii.Plasticity index is decreases with increase in addition of fly ash up to 40%. ix.MDD increased slightly up to 40% of fly ash and then it decreases. OMC of B,C. soil treated with fly ash decreases with the increase in fly ash content. x.Bioenzyme is best stabilizing agent as compared to lime and fly ash and also has life time sustainability, so it can be used in Expressways and national highways. xi.Lime and Fly ash are cheaper materials and has considerable scope for construction of low cost roads such as Village roads.

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