• K.Shashidher

A proper understanding of subgrade material in pavement section is essential for engineer to construction, rehabilitation, or widening of a highway facility. As pavements are designed to distribute stresses imposed by traffic to the subgrade, the subgrade conditions play a significant influence on the choice and thickness of pavement structure. Due to non-availability of uniform strength of the soil, it needs to be modified either mechanically or by using additives so that pavement is supposed to provide adequate strength in terms of California bearing ratio (CBR).These days there is an increase in usage of bio enzymes to stabilize soil. A bio enzyme named TerraZyme is used in this study to improve sub-grade material which is a natural material, non-corrosive, non-flammable, non-toxic liquid enzyme fermented from vegetable extracts that improves the engineering properties of soil, which allows higher soil compaction, reduces permeability and increase strength. .Thus it eliminates the need to excavate substandard materials, transport them to a suitable site where they can be disposed of, and then excavate and import more suitable materials. Secondly, it improves the properties of existing materials, thereby providing a good platform for the overlying pavement layers. This will limit deflection that may lead to fatigue and rutting. Aim of the study is to stabilize the sub-grade using terrazyme and design and evaluate the fatigue and rutting parameters of flexible pavement for stabilized and un-stabilized sub-grade material for different composition of pavement materials using IRC: 37-2012 are subjected pavement compositions to analysis using the software IITPAVE.

"Soil Stabilization and Design of Flexible Pavements Using IRC: 37-2012", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 2, page no.146-150, February-2018, Available :http://www.jetir.org/papers/JETIR18MG029.pdf

"Soil Stabilization and Design of Flexible Pavements Using IRC: 37-2012", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 2, page no. pp146-150, February-2018, Available at : http://www.jetir.org/papers/JETIR18MG029.pdf