SHEARING AND FRICTION IN THE PULLOUT BEHAVIOR OF WOVEN GEOTEXTILES FOR REINFORCEMENT APPLICATIONS

The apparent frictional resistance developed in a pullout operation is generally the result of complex phenomena occurring at the soil-geote xtile interface. In this study, an attempt is made to characterize the apparent pullout frictional resistance, which is presumably developed because of soil shearing and soil-geotextile friction at the interfac e. To illustrate this, the pullout resistances of two different woven geotextile samples with sand are evaluated in the laboratory, and thei r shearing and friction constituents are calculated. The individual in terface areas responsible for shearing and/or friction are found to be important for developing pullout resistance.