Barrier
Sodium bentonite GCL 4000 g/m²
Natural sodium bentonite encapsulated between needle-punched geotextiles; self-sealing in the presence of moisture.
Geosynthetic clay barriers
GCL — Bentonite
Geosynthetic clay barrier for containment applications requiring low permeability with reduced thickness.
GCL performance depends on confinement and proper joint resolution
Low permeability in a controlled geosynthetic layer
A geosynthetic clay liner, or GCL, integrates bentonite between geotextile layers to form a thin hydraulic barrier. It can be used as a component of composite systems or as an evaluated alternative to compacted mineral layers.
Its behavior depends on hydration, confinement, support preparation, overlaps, and chemical compatibility with the medium. Product definition must therefore include clear storage and installation criteria.
Products in this family
Review each data sheet for properties, formats, and application criteria. Availability and configuration are confirmed for each project.
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Common applications
- Landfills and waste cells
- Ponds and storage works
- Channels and hydraulic systems
- Composite barriers beneath geomembrane
Selection criteria
Bentonite mass is only one selection factor. The supporting structure, internal strength, required permeability, confinement type, and project chemical and hydraulic conditions are also considered.
Share drawings, specifications, estimated quantities, and site conditions so the applicable alternative can be reviewed before quoting.
Project integration
GCL requires a protected installation sequence
Rolls must be protected from premature hydration and damage during storage and handling. On site, support regularity, panel orientation, overlaps, and treatment of penetrations or transitions are controlled.
Covering and confinement are coordinated to preserve barrier continuity and prevent displacement. If GCL forms part of a composite system, its installation must be compatible with the geomembrane and planned drainage or protection layers.
Questions before specifying
Initial answers to organize the available information. The final definition must consider the particular conditions of each project.
- Does a GCL always replace a compacted clay layer?
- No. It may be an alternative or complement, but equivalence must be assessed according to required performance, confinement, and chemical and hydraulic conditions.
- Can it be installed on any surface?
- The base must meet project-defined conditions and be free of elements that compromise continuity. Preparation is reviewed before rolls are deployed.
- What information is needed for a quote?
- Area, drawings, support condition, application, contacting liquid, layer system, location, and expected supply and installation schedule.
Define supply from actual project conditions
Send us the application, location, quantities, and timeline so we can guide the product and required service scope.
Assess requirementMore than supply
The product can be integrated with technical review, logistics coordination, and on-site execution according to the project scope.