Evaluating aqaba marine sand geotextile interface shear strength

Abstract

ABSTRACT Knowledge of the interface behaviour of sand and geotextiles and assessment of model variables are fundamental to the evaluation of design suitability of in-situ conditions. This paper examines the suitability of using the hyperbolic model to represent the results of interface shear strengths test results obtained from direct shear tests. Different types of woven, as well as non-woven geotextiles, were tested against marine sand in a direct shear tester. The sand above the geotextile layer was placed at a different bedding angle to evaluate the inherent anisotropy of marine sand. The results obtained thereafter were simulated using extended hyperbolic model. The extended hyperbolic model mimicked the experimental results obtained for different types of geotextiles. Moreover, the method in which sand was placed in the field above the geotextile was found to sway the model prediction.