This standard covers the method of deter-mination of the coefficient of interface friction between a soil ( including aggregate and ballast) and a geosynthetic be the modified direct shear technique.
IS 13326 Pt.1-1992 history
1992IS 13326 Pt.1-1992 Evaluation of Interfacial Friction between Geosynthetics and Soil—Test Methods Part 1 Modified Direct Shear Technique