MODIFICATION OF SOIL PROPERTIES USING BACILLUS SPHAERICUS

Abstract

ABSTRACT Generally construction is not done on soil having very low strength but with time we need to construct on soil having very low strength. Bio cementation is very interesting phenomena in which properties of soil are improved which are very beneficial for construction on soil. Properties improved are strength of soil, permeability, water tightness, resistance to washout. Bacteria introduced in soil causes the bonding in between particles of soil by calcite precipitate. Voids present in soil also decreases due to calcite precipitation which lead to the phenomena called bio clogging in soil. We found out increase in strength of soil due to bio cementation of soil. There are various types of soil improvement method but MICP has advantage that it doesn’t cause any type harmful effect on soil and surrounding environment. Microorganisms play a very indispensable role in geotechnical engineering in future.