... reinforced composites, consisting of three layers, the middle layer of sodium bentonite between two layers of woven geotextile and nonwoven fabric. Three ... GCL is in contact with water, the process can keep bentonite grains flow in one direction, at the same time, ... Rolls) PIC 3: Our GCLs Test Equipments ( Both geotextiles and Bentonite Have Been tested ) PIC 4: GCL Applications geosynthetic clay liner ...