• Dr. Nimi Ann Vincent
• Grace Mary Abraham
• Elna Abraham Alummoottil
• Alphonsa Philip
• Anisha Elsa Varghese, Jesni Anna John

Lithomargic clay constitutes an important group of residual soils, commonly found in the western coastal side (konkan region) of southern India. Most of the area in konkan hence have a tough time due to landslide and debris fall during the monsoon. Lithomargic clay loses a greater part of its strength when saturated. They are generally kaolinitic and contain high percentage of silt deposits which bring in problems like slope failure, foundation failures, embankment failures, uneven settlements etc. A potential treatment method which would improve soil behavior using green technology would be beneficial considering the cost savings and environmental synchronization in comparison to other chemical stabilization methods. The purpose of this study is to understand the effect of bio enzyme treatment on lithomargic clay. Soil stabilization using bioenzyme (Terrazyme) occurs through cationic exchange. A set of lab studies were conducted to study the change in index and strength properties of collected lithomargic clay samples by stabilization with varying dosages of terrazyme enzyme. The optimum dosage of terrazyme was found to be 0.1 ml/L. It is observed, that there is 42%, 70%, 35% increase in unconfined compressive strength, cohesion, and angle of friction respectively after 7 days curing. A series of stability analysis on embankment slope of different heights and slope angles for unstabilized and stabilized soil slope were performed. Factor of safety for slopes of varying heights (4m to 12m) and slope angles (30º to 60º) where greater than 1.5 for the stabilized soil.

Slope stabilization, Terrazyme, Lithomargic clay, GEO5

"Study on Soil Stabilization Using Bioenzyme: Terrazyme", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.8, Issue 6, page no.c318-c323, June-2021, Available :http://www.jetir.org/papers/JETIR2106315.pdf

"Study on Soil Stabilization Using Bioenzyme: Terrazyme", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.8, Issue 6, page no. ppc318-c323, June-2021, Available at : http://www.jetir.org/papers/JETIR2106315.pdf