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Geosynthetic Clay Liner GCL

GCL sodium bentonite geosynthetic clay liner is a new type of geosynthetic material, and it can be divided into needle-punctured GCL(GCL-NP) and needle-punctured coated GCL(GCL-OF). GCL is a kind of bentonite seepage-proofing mat needle-punctured through filling sodium bentonite between woven geotextile and non-woven geotextile. Among which tiny fiber spaces can be formed to prevent bentonite particles to move to a direction. It can form glue-type water-proofing layer to prevent water leakage. Woven geotextile of 120g/㎡ and non-woven geotextile of 220g/㎡ are applied in this kind of GCL.Mass per unit of GCL sodium bentonite clay liner can be divided into: 4000g/㎡, 4500g/㎡, 5000g/㎡, 5500g/㎡, etc. The length of the product is 30m, and the width is 6m.

GCL sodium bentonite geosynthetic clay liner is a new type of geosynthetic material, and it can be divided into needle-punctured GCL(GCL-NP) and needle-punctured coated GCL(GCL-OF). 膨润土防水毯_01

1. Environment friendly

it is raw and natural materials,;aging and corrosion seldom happen. It can keep its quality and then it does not cause any injuries and pollution for human and the environment. It is not only waterproof, but also has good ventilation performance. It can stick up for the exchange of the ecological environment. it is a pure natural, new, green waterproof material.

2. Permanent waterproof,excellent performance

its waterproof properties are much more durable than that of the buldings.Sodium bentonite would transform to high density septum under hydro pressure. When The thickness is 3mm

the permeability is below a*10-11/sec(a=1~9), which equals to the density of 100 times of the clay with 30 mm thickness. Water retention performance is evident.

3. Easy to construct

Bentonite powder,nails and washers are enoueh for connection and fixation. Construction is not constrained bv weather conditions and it could be taken under cold or wet conditions

Bentonite powder is spread on overlap point. When water comes, GCL would be overlapped automatically. It is so far the only material that starts the waterproof effect by water in the world. It is not necessary to take additional examination when the construction is completed.The repair works are easy in case of waterproof defects. Among the existing waterproof materials, GCLs construction period is the shortest and its operation is the easiest. lt has an eminent effect on shortening the construction period as well as saving the cost.

4. Strong self-restore capacity

The integration between waterproof material and its target enables GCL a 20~28 times sweling volume.Even if concrete structure trembles or subsides, the bentonite in GCL would restore the crack of 2mm or helow on the concrete structure immediately. Even if the diameter of nerforation reaches 30 mm the restoration wll he finished within 15 davs comnletely.


GCL sodium bentonite clay liner is applied specially in seepage-proofing in constructions such as artificial lake, landfill, underground qarage,roofgarden,pool,oil depotstorage vard for chemical s.etcThe cost performance is aood.and applications are wide.膨润土防水毯_06

GCLs paving:

1. When paving the GCLs, it can use the machine and also the manpower.

2. Paving the GCLs according to the stated order and way.

3. Paving the GCLs, seaming overlapping between mat and mat should be staggered.

4. There should not be sand and soil, hydrocele and so on impurity, to avoid affecting on the overlappingquality.

5. To avoid the GCLs gliding, had best to fix it with nails when installing in vertical and bevel.

6. Both sides of the GCLs are geotextile and woven geotextile, when paving, the geotextile should be next to the         water.

7. When paving, examine the GCLs appearance at any moment

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1.GCLs bentonite clay liner )paved must be backfilled on the day.

2.The sand or the sifted soil is the best choice, and the soil should not have impurity with

more than10mm.

3.The soil must be tamped every backfilling 50cm, and the degree of density should be more than


4.Pay attention to the GCLs when tamping, it can not be damaged.

5.When backfilling in the planar surface, the thickness should be 30cm at least.






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