Low permeability geosynthetic clay liner and method of manufacture thereof

摘要

A flexible geosynthetic clay liner (10) with a low permeability or controlled permeability intermediate sheet (13) is provided. The liner (10) includes two outer sheets (11,15) with two layers (12,14) of bentonite and an intermediate sheet (13) disposed therebetween. The intermediate sheet (13) may be rippled or deformed to enhance the structural stability of the liner (10). The intermediate sheet (13) may be chosen from a material with low or ultra-low permeability characteristics or may be chosen from a material with controlled or directional permeability characteristics.