EVALUATION OF SOIL REINFORCED WITH GEOGRID IN SUBGRADE LAYER USING FINITE ELEMENT TECHNIQUES

ABSTRACT: The paper describes Finite Element (FE) models that are used to simulate the behavior of two types of geogrid laid between subbase/subgrade layers in flexible pavement structure. The properties of materials used to predict behavior of the sand soil is required to give accurate predictions of pavement performance. Physical and Mechanical properties of the pavement structure components of are established using standard laboratory tests including repeated load test with geogrid reinforcement. The results of analyses show that the finite element model results and implementation reported in this study can accurately predict permanent deformation in the pavement structure