DIRECT SHEAR STRENGTH TESTS ON VARIOUS LINING SHEETS WITH PROTECTION MAT

Abstract

Results of direct shear strength tests on various lining sheets, i. e. PVC, LLDPE and TPO-PP with nonwoven geotextile are shown. The results show that angle of shear resistances is PVC>TOP-PP>LLDPE with nonwoven geotextile in wetted condition. It is considered due to the difference of their elasticity affects the results. Also the angle of shear resistance is smaller on the backside of geotextile compare to its front side. Further it is suggested that even lower shear resistance of LLDPE could be got higher resistance by improving surface roughness.