Waterproof Blanket / Bentonite Geosynthetic Clay Liner GCL
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
Bentonite as natural inorganic material,no special effects to the environment, have good environmental performance
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
|GCL, Mass/Unit area(g/m2)||≥4000||≥4000||≥4000|
|Methylene blue adsorbed||≥30||≥30||≥30|
|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|
|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|