In this present study, the effectiveness of bio enzyme in stabilizing the expansive soils of Puri districts is studied through laboratory experiments. Bio-Enzyme namely Terrazyme has been used as stabilizer in this work. The locally available expansive soil was accumulated from field to study the geotechnical properties. The plasticity index is much more due to the high percentage of clay content in this type of soil. Various tests were carried out for the virgin soil and bio enzyme treated soils with variable dosages. The tests carried out were the consistency limits, compaction properties, unconfined compressive strength, triaxial test and California bearing ratio. The laboratory tests results showed a lot of improvement and desirable results in terms of strength of the stabilized soil.
