6500g/m² Geosynthetic Clay Liner for Contaminated Site Remediation Barriers

1. Reduce Contaminant Migration Through Seepage

When properly hydrated and confined, bentonite forms a low-permeability barrier that helps reduce water flow through the liner. This can reduce the risk of contaminants migrating with seepage water.

2. Create a Barrier Around Contaminated Soil

Where excavation is impractical or in-situ containment is part of the remediation strategy, GCL can be installed above, beneath, or around contaminated areas as specified by the engineering design. It may be combined with protective soil layers and other barrier materials to limit contaminant migration.

3. Combine GCL with HDPE Geomembrane

For highly contaminated sites, projects with strict groundwater protection requirements, or applications involving chemically aggressive liquids, a composite barrier incorporating GCL and HDPE geomembrane may be considered.

The HDPE geomembrane provides a continuous barrier, while the GCL contributes a low-permeability clay layer. Their combination can improve overall containment reliability when properly designed, installed, and inspected.

4. Accommodate Certain Subgrade Variations

Compared with field-compacted clay liners, factory-manufactured GCLs offer relatively uniform construction and convenient installation. Some needle-punched reinforced products also provide useful internal and interface shear resistance.

However, GCL does not eliminate the need for subgrade preparation, correct panel overlaps, protective cover, or construction quality control. Slope stability and interface shear strength require particular attention on sloping surfaces and in areas subject to differential settlement.