Geosynthetic Clay Liners
Geosynthetic clay liners (GCLs) are hydraulic barriers made of clay bonded to a single geosynthetic layer or to multiple geosynthetic layers. Because of its low permeability, swelling capacity and relative abundance, natural sodium bentonite is the preferred clay component of GCLs. A wide range of materials, including geotextiles and geomembranes, are used to carry and encapsulate the clay. Also, they provide the product with structural support.
Geosynthetic Clay Liners are used primarily as substitutes for compacted clay liners (CCLs), providing signiﬁcant advantages in cost, ease of installation, and performance. Primary applications include surface impoundment, secondary containment and landﬁlls.