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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.
| Product Name | Geosynthetics Clay Liner (GCL) |
| Constitute | Geotextile + Bentonite + non woven fabric |
| Width | 1M - 6M ( can be customized) |
| Length | 25M, 30M, 35M, 40M, or following your requirements |
| Weight | 4000g/sqm - 6000g/sqm |
| Packaging | PP woven bag or PP waterproof woven bag |
| Certification | CE / ISO |
| Samples | Free samples available |
| Payment Terms | TT 30% as deposit,70% balance payment at sight of BL copy or L/C at sight |
| Delivery Terms | Ocean shipping |
| Delivery Time | About 14 days after we got the advance payment |
| Projects/ Technical data | Specifications | ||
| GCL-NP | GCL-OF | GCL-AH | |
| Weight per unit area(g/m2) | ≥4000g/m2 | ||
| Bentonie swell index(ml/2g) | ≥24 | ≥24 | ≥24 |
| Ethylene blue absorption(g/100g) | ≥30 | ≥30 | ≥30 |
| Tensile strength (N/100mm) | ≥600 | ≥700 | ≥600 |
| Racking strength(N/100mm) (for nonwovwn and woven fabric) | ≥40 | ≥40 | - |
| Racking strength(N/100mm) (for HDPE films and nonwoven fabric) | ≥30 | - | |
| Permeability(m/s) | ≤5.0x110^(-11) | ≤5.0x110^(-11) | |
| Anti-static water pressure | 0.4Mpa,1h, not seepage | 0.6Mpa,1h,not seepage | |
| Filtration loss (ml) | ≤18 | ≤18 | ≤18 |
| Bentonite durability (ml/2g) | ≥20 | ≥20 | |
Construction is relatively simple, don't need to be heated and paste. With bentonite powder and nails, washers, etc are connected and fixed.
Small volume.
Excellent flexibility.
Simple construction.
Permanent waterproof.
Good sealing performance.
Green environmental protection.
Application Scenarios
8. The underground structure and waterproof engineering such as underground foundation.