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Bentonite Mat / Geosynthetic Clay Liner (GCL) |
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Synonyms: Bentonite Clay Layer, Bentonite GCL, Bentonite Blanket |
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Applications
Our Bentonite mats (GCL) are efficient waterproofing and isolation materials, providing impermeability to protect soils, subgrades and structures in many civil, geotechnical and environmental protection applications, such as:
ид Tunnel linings, Landfill linings, Pond linings ид Foundation and basement walls, bridge abutments and other wall structures ид Oil drilling, mining, etc..
Bentonite mats also offer a more cost-effective, less installation intensive alternative to conventional clay barriers.
Product Models |
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Our Bentonite mats, also named geosynthetic clay liner (GCL), are reinforced geocomposites which consist of a layer of sodium bentonite granule affixed by needle-punching to a woven geotextile and a nonwoven geotextile.
The products are used as a liquid and gas barrier in a wide variety of civil, geotechnical, environmental and hydraulic applications. |
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Quality Assurance
Our factory has been qualified by the stringent standards of ISO 9001 quality management system and ISO 14001 environmental management system. |
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Our Bentonite mats have very low hydraulic conductivity, high swelling capacity and quick expansion speed. |
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Bentonite is an extremely absorbent and swelling clay formed from volcanic ash. Our Bentonite mats offer many unique advantages over conventional compacted clay liners. For example, our bentonite mats have the ability to self-heal holes and rips due to the swelling properties of the bentonite. |
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Copyright 2013© COALESCENTRUM INC. (CLSC) |
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Technical Data/ Specifications |
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Bentonite GCL/ Bentonite Mat |
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Product Series |
Description |
Mass per Unit Area |
Size (W x L) |
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Bentonite mats ST |
Standard Bentonite Mat. Needle-punched |
5,000 - 5,380 g/m² ; (1.02 - 1.024 lbs/ft²) |
5.8 m x 40 m; 2.0 m x 46 m; 2.0 m x 32.2m W:6.59 to 19.02 ft L:105.64 to 150.91 ft. |
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Bentonite mats PE |
Needle-punched and HDPE laminated. |
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Bentonite mats STN |
Needle-punched. Natural sodium Bentonite |
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Bentonite mats PEN |
Needle-punched and HDPE laminated. Natural sodium Bentonite ingredient. |
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Property |
Specification |
Typical Value |
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GCL mass per unit area |
5000 g/m² Min. |
5000 g/m² (1.024lbs/ft²) |
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Thickness of GCL |
5-7 mm |
6 mm (0.24 in) |
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PP Cover Layer (non-woven geotextile) |
220 g/m² Min. |
220 g/m² (0.05lb/ft²) |
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Mass per Unit area |
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PP Carrier Layer (woven geotextile) |
110 g/m² Min. |
110 g/m² (0.023 lb./ft²) |
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Mass per Unit area |
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Bentonite Swell index |
24 ml/2g Min. |
24 ml/2g |
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Methylene blue absorption |
30 g/100g Min. |
32 g/100g |
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Fluid loss |
18 ml Max. |
18 ml |
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Tensile strength |
60 N/10cm Min. |
120 N/10cm (68.5lbs/in) |
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Break Elongation |
10% Min. |
18% |
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Peel strength |
4 N/10cm Min. |
7.2 N/10cm (4.11lbs/in) |
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Permeability |
5X10-11 m/s |
5X10-11 m/s |
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Static hydraulic pressure resistance (0.4Mpa, 1h) |
No leakage |
No leakage |