Geosynthetics Clay lines (GCLs) 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 the woven or non-woven).When hydrated under a confining load ,the bentonite swells to form a low permeability clay layers with the equivalent hydraulic protection of several feet of compacted clay.

It is used prevent water leakages in  areas of artificial lakes ,waste disposal fields ,underground garage, top building gardens, reservoirs ,oil warehouses ,and chemicals accumulating fields .

1.      Improved leakage performance

2.      Permanent waterproof performance

3.      Simple construction and short time limit for a project.

4.      Not influenced by air temperature

5.      A kind of green material and good to environmental protection

6.      More versatile than compacted clay

7.      Increased airspace and liner efficiency

Technical Data:

Width : 5.6m

Length :30m

Weight per unit≥5000g/m²

Weight of Bentonite per Unit ≥4500g/m²

Permeability coefficient ≤5×e^-11m/sec

Swell Index ≥24ml/2g

Horizontal ≥ 8 ≥ 8
CBR bursting strength KN
  ≥ 1.5 ≥ 2.0 ≥ 1.0