An Experimental Investigation on usage of Geogrids in Flexible pavement Design

There are two main application areas for geogrid reinforcement in permanent paved roads.They are subgrade stabilization and base reinforcement. The kind of subgrade, subbase, and base course materials have a significant impact on the pavement’s strength and lifespan.However, the majority of flexible pavements in India are built primarily over troublesome and poor subgrade. Base reinforcement increases the pavement’s ability to support loads during repeated traffic by placing geogrids at the bottom of unbound layers of a flexible pavement system. The geogrid serves a critical function in subgrade stabilization applications by providing a construction platform over weak subgrades. This enables the transport of equipment and facilitates the construction of the pavement system while minimizing excessive deformations in the subgrade.Increased pavement thickness is required when the subgrades exhibit a relatively low California Bearing Ratio (CBR).