International Subsea Services -Geosynthetic clay liners have a long-lasting resistance to physical and chemical break-down

International Subsea Services -Geosynthetic clay liners have a long-lasting resistance to physical and chemical break-down

Derrek Offutt, PM Chief Executive Officer at International Subsea Services

GCL Liners

Geosynthetic Clay Liners (GCL) are high-performance geocomposites that are used as an alternative to conventional compacted clay liners. GCLs consist of two layers of geotextile stitched together enclosing a layer of processed sodium bentonite. Bentonite is a natural sealant, and when in contact with water, swells to form a low permeability clay liner. Geosynthetic clay liners have a long-lasting resistance to physical and chemical break-down in harsh environments such as landfills and other containment systems.

Advantages
* Unique self-sealing attributes that reduce the risk of punctures and leakage.
* Excellent shear resistance properties due to needlepoint reinforcement.
* Reduced leakage by a factor of 30 over compacted clay.
* Better hydraulic performance.
* Ease of installation. & Increased air space.
* Cost-effective: one truckload of GCL replaces 200 truckloads of clay.

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