PARAMETRIC STUDY ON GEOGRID – REINFORCED FLEXIBLE PAVEMENT

Abstract

Due to the rapid increase in the growth of traffic, there is frequent occurrence of various damages in the pavement. To rectify the damage in the pavement many improvement methods are adopted using chemicals, admixtures, industrial waste, etc. Even though it cannot fulfil the strength requirement of the pavement for traffic flow. In view of this for the past four decades, the attempts were made to use geosynthetics in the pavement. In this line, the attempt is made to investigate the effect of reinforcement in the flexible pavements. The models are made with and without reinforcement and their performances are perceived by analysis made using finite element programme PLAXIS 8.2. The analysis of pavements involves the parametric study of displacement, effective stress and effective strain. Results of unreinforced and reinforced pavement obtained and are compared. From the comparisons, it is observed that the strength of the geosynthetic reinforced pavement is prominently higher than the unreinforced pavement (nearly 11 times). This technique helps to analyze the pavement on weaker soil with geosynthetics.