INTERFACE RESPONSE OF GEOTEXTILES. PROCEEDINGS OF THE ELEVENTH INTERNATIONAL CONFERENCE ON SOIL MECHANICS AND FOUNDATION ENGINEERING, SAN FRANCISCO, 12-16 AUGUST 1985

This paper presents the results of a study to evaluate the interface friction between geotextiles and soil or ballast. A knowledge of interface friction is necessary to estimate the restraining characteristics of a geotextile, i.e., the minimizing of lateral restraint under horizontal loads. The study involved two kinds of geotextiles: a woven type, Celanese 600X and nonwoven type, Monsanto C-34. All tests were performed in a specially designed direct shear machine where a 25.4 cm x 25.4 cm (10 in x 10 in) specimen of material can be tested. For the covering abstract of the conference see IRRD 287689. (Author/TRRL)