Sodium Bentonite Geosynthetic Clay Liner with ASTM Standard

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5000 m²
Supply Capability:
100000 m²/month

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Product Description:

Sodium Bentonite Geosynthetic Clay Liner 


Introduction of GCL:

Geosynthetic Clay Liner is manufactured 

by three levels, including two levels of geotextile whose functions are protecting and strengthen to ensure   shearing strength and tensile strength, inner content is Sodium bentonite clay. It is manufactured by nature layer silicate inorganic materials and has high expansibility and high water-absorbing capacity, when soak with low permeable capability, whose the main function is anti-seepage.


Description of GCL 

Unit weight ≥4000gsm

width of 4-6m

 Compared with clay liner ,it has the advantages of small size,light weight ,good flexibility and sea

 easy for construction and suitable for uneven settlement.


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 10-11m/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

Application of  GCL:


Mainly used in environmental engineering or landfill emissions underground reseroirs.underground


infrastructure construction projests sealing solution ,segregation ,anti-leakage,good effect,anti-




  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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