Abstract
Interface shear strength between geosynthetics and geomaterials is an important factor for stability of slope that is made on a geosynthetics multi-liner system by overburden geomaterials behind the seawall of a controlled sea-based disposal site. A series of direct shear tests were conducted to obtain interface shear strength between the adjacent components that are used in the liner system. Shear strength and stress-displacement relations are well characterized by the test conditions either in the air or in the water, and by the types of geomaterials and geosynthetics.
