NUMERICAL SIMULATION OF GEOTEXTILE-SAND INTERFACE USING BOX SHEAR TEST AND PULL-OUT TEST: A COMPARISON (original) (raw)

Geotextile is a polymeric product used in various geotechnical structures to increase the strength and stability. The performance of the geotextile reinforcement mainly depends on the soil-geotextile interface behaviour. The interface properties are determined either from box shear test or pull-out test. In the present study, an attempt has been made to compare the interface properties obtained from above mentioned tests using the PLAXIS 2D numerical simulations. Initially, the models were validated with the previous literatures. The validated model was further used to study the geotextile-sand interface behaviour. The results revealed that the interface properties obtained from the box shear test and the pull-out tests vary significantly. The interface friction angles obtained from the box shear test and the pull-out tests were found to be 80% and 50% respectively that of the friction angle of the sand. The results of the parametric studies suggested that the interface properties were not significantly influenced by the stiffness of the geotextile and strain rate.