It is usually composed of two layers of geotextile sandwiching a layer of bentonite. Has the following significant characteristics:

Low permeability: It can effectively prevent the penetration of liquids and gases, providing excellent isolation effect.

Self healing ability: When GCL is locally damaged, bentonite will expand in contact with water, fill and repair gaps on its own, and maintain its anti-seepage performance.

Convenient construction: Compared to traditional clay liners, GCL is lightweight, easy to transport and lay.

GCL has been widely applied in the following fields:

Landfill site: As an impermeable layer at the bottom and slope, it prevents leachate from polluting groundwater and the surrounding environment.

Water conservancy engineering: such as anti-seepage treatment of reservoirs and channels.

For example, in the construction of a large landfill site, using GCL as a liner can greatly reduce the risk of leachate leakage, protect the surrounding soil and water sources; When constructing small reservoirs, laying GCL can effectively reduce water leakage and improve the utilization of water resources.