Waterproof Blanket / Bentonite Geosynthetic Clay Liner GCL

Short Description:

Type: Waterproof Roll Material
Ceiling Tile Shape: Roll
Material: Geotextile and Bentonite
Thickness: Any
Ceiling Tile Type: Bentonite
Surface Treatment: Roll Coated
Specification: 4-6mx50m
Production Capacity: 10000 Square Meter/Day
Certification: ISO

Product Detail

Product Tags

Anti Water

Anti Corrossion

Anti Rusty

Anti Impact

Anti Slip

Anti Abrasion

Product Details

Geosynthetic clay liner GCL, is also called “clay blankets”, “bentonite blankets”, “bentonite mats”, “prefabricated bentonite clay blankets” or “clay geosynthetic barriers”.

Geosynthetic Clay Liner GCL are high performance needle punched environmental reinforced composites which combine two durable geotextile outer layers with a uniform core of natural sodium bentonite clay to form a hydraulic barrier. Fibers from the non-woven geotextile are needle punched through the layer of bentonite and incorporated into the other geotextile (either a woven or non-woven).when hydrated under a confining load, the bentonite swells to form a low permeability clay layer with the equivalent hydraulic protection of several feet of compacted clay.

Good Quality Visible


The Permanent Waterproof

No happen aging or corrosion phenomena, so the waterproof performance persistence


Sodium base bentonite under water pressure condition to form diaphragm with high density

Not Affected By Temperature

In cold climates will not brittle fracture

Environmental Protection

Bentonite as natural inorganic material,no special effects to the environment, have good environmental performance

Simple Construction

Construction is relatively simple, don't need to be heated and paste. With bentonite powder and nails, washers, etc are connected and fixed.

Strong Self-Restore Capacity

The integration between waterproof material and its target enables GCL a 20~28 times swelling volume

Technical Data

Item Technical specifications
GCL, Mass/Unit area(g/m2) ≥4000 ≥4000 ≥4000
Swell Index(ml/2g) ≥24 ≥24 ≥24
Methylene blue adsorbed ≥30 ≥30 ≥30
Tensile strength(KN/m) ≥600 ≥700 ≥600
Elongation at max load ≥10 ≥10 ≥8
Peel strength (N/100mm) Non-woven geotextile and woven geotextile ≥40 ≥40 -
PE geomembrane and Non-woven geotextile - ≥30 -
Resistance hydraulic pressure 0.4Mpa, 1h, no leakage 0.6Mpa, 1h, no leakage 0.6Mpa, 1h, no leakage
Fluid loss(ml) ≤18 ≤18 ≤18
Durability of bentonite(ml/2g) ≥20 ≥20 ≥20
Note: GCL-NP: Needle punched process GCL;        GCL-OF: Needle punched and cocoon process GCL;        GCL-AH: Viscose process GCL


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