GCL Sodium Bentonite Liner Geosynthetic Clay Liners

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Product Description:

GCL Sodium Bentonite Liner Geosynthetic Clay Liners



Product Introduction

Geosynthetic clay liner is composed of high dilatability of sodium base bentonite filling between the special composite geotextile 

and nonwoven fabric, made by the method of acupuncture or suture composite impervious material. Use acupuncture into 

geosynthetic clay liner can form many small fiber space, make the bentonite particles can't flow in one direction, when under the 

influence of water within the mat forming uniform density of colloidal waterproof layer, prevent the leakage of water. 

For different projects,it can combine HDPE liner for better waterproof.

Bentonite has the expansion of the water characteristics. General calcium base bentonite expands, its expansion is only about 3 times 

their own size; And sodium base bentonite adsorption 5 times its own weight of water in case of water, Volume expansion to the 

original 15 to 17 times above; Lock sodium base bentonite in the middle of the two layers of geosynthetic materials, protecting 

and strengthening the role of, Make the GCL has a certain overall shear strength.


Geosynthetic Clay Liner

GCL Feature:


1.The permanent waterproof


Because sodium base bentonite is a natural inorganic material, even after a long time or the surrounding environment changes, 

also won't happen aging or corrosion phenomena, so the waterproof performance persistence.


2. Compactibility


Sodium base bentonite under water pressure condition to form diaphragm with high density, thickness of about 3 mm, 

its permeability is 5 x 10-11 m/SEC below, equivalent to 100 times the compactness of 30 cm thickness of clay, 

have very strong since the water retention performance.



3.Not affected by temperature


In cold climates will not brittle fracture.



4.Environmental protection


Bentonite as natural inorganic material, non-toxic harmless to human body, no special effects to the environment, 

have good environmental performance.



5.Simple and short time of construction


Compared to other waterproofing materials, construction is relatively simple, don't need to be heated and paste. 

With bentonite powder and nails, washers, etc are connected and fixed. After construction does not need special

inspection, if it is found that the waterproof defects and easy to maintenance.

GCL is existing waterproof material in construction period of the shortest.



PropertyNational standardEnterprise StandardInspection standards

 JG/T 193-2006

Geosynthetic Clay Expansion index≥24 ml/2g≥25ml/2gASTM D5890
Mass Per Unit Area(g/m2)≥4000 g/m2≥4000 gm2ASTM D5993
Tensile Strength≥6KN/m≥8KN/mASTM 4632
Maximum load elongation≥10%≥10%ASTM 4632
Permeability≤5×10-11≤5×10-11ASTM D5084
Moisture content≤15%≤15%ASTM D4643
Peel strength≥40N≥65NASTM D4632
Hydrostatic pressure0.4Mp0.4~0.6MpASTM D5891



  1. How many quantity for one 20'' container?

    About 5,000m2, 16rolls

  2. What's your delivery time?

    About 15-20days against deposit received

  3. . What's your package?

    Per roll with two pieces woven bag

    Geocomposite Clay Liner


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