Bentofix® Geosynthetic Clay Liner (GCL) – Terrafix ...
The sodium bentonite clay utilized in Bentofix® Thermal Lock GCL is a naturally occurring clay mineral that swells as water enters between its clay platelets. When hydrated under confinement the bentonite swells to form a low permeability clay layer with the equivalent hydraulic protection of several feet of compacted clay.
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