• Chetan C Patil
• P Shivananda

The technique of using geosynthetics is widely used in the pavement construction. Many laboratory tests have been conducted to study the behaviour of soil reinforced with different types of geosynthetics and while constructing roads on a weak subgrade geogrids can be used as a reinforcement which will improve the performance of these roads by reducing permanent deformation. This study illustrates the functioning of geogrids having different axial stiffness values in flexible pavement through finite element analysis with PLAXIS 2D software. Geogrid is widely used material as a reinforcement in various flexible as well as rigid pavements.The flexible pavement is one of the major area, where the improvement in performance of pavement service life is very much needed. Material models such as Mohr-coulomb and linear elastic are employed in the analysis to describe the behavior of the materials. The triangular element of 15-noded is used for layers of pavements. The vehicle loading and thickness of each layer was used as per IRC 37-2012. In the present study, axissymmetric model is used in the PLAXIS 2D for investigating the effect of axial stiffness of geogrids in the reduction of vertical deformation when placed at the interface if sub base and base course. Dicrease in vertical deformation observed with increase in axial stiffness of the geogrid. The results showed maximum reduction in vertical surface deformation in geogrid reinforced pavement when the stiffness of geogrid is 800kN/m

Key Words: Finite element analysi;, Stiffness; Geogrids;Deformation

"Effect of Axial Stiffness of Geo grid in the flexible Pavement deformation through Finite Element Analysis with Plaxis 2D", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.4, Issue 11, page no.375-379, November-2017, Available :http://www.jetir.org/papers/JETIR1711069.pdf

"Effect of Axial Stiffness of Geo grid in the flexible Pavement deformation through Finite Element Analysis with Plaxis 2D", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.4, Issue 11, page no. pp375-379, November-2017, Available at : http://www.jetir.org/papers/JETIR1711069.pdf