Geosynthetic clay liner consists of a layer of bentonite
encapsulated between two geotextiles (a nonwoven and a woven
polypropylene geotextiles), needle punched together and laminated
on one side to a polyethylene membrane for maximum performances
under a wide variety of field conditions. This integrated matrix of
bentonite and needle punched fibers provides high shear strength
and allows the GCL-4 to keep low permeability even in presence of
adverse installation conditions. The GCL-4 has high internal shear
strength characteristics for steep slope applications.
