Views: 0 Author: Site Editor Publish Time: 2025-03-13 Origin: Site
Geosynthetic Clay Liner (GCL), also known as a sodium bentonite composite waterproof pad, is designed by filling high-swelling sodium bentonite between special composite geotextile and non-woven fabric. The impermeable cushion, created using an acupuncture method, forms numerous small fiber spaces, preventing the flow of bentonite particles in one direction. When exposed to water, it creates a uniformly high-density colloidal waterproof layer within the pad, effectively preventing water leakage. GCL finds application in various areas, including artificial lakes, landfills, underground garages, roof gardens, pools, oil depots, and chemical yards.
| item | Technical Indicator | ||
| GCL-NP | GCL-OF | GCL-AH | |
| Weight per unit area(g/m2) | ≥4000g/m2 | ||
| Bentonie swell index(ml/2g) | ≥24 | ||
| Ethylene blue absorption(g/100g) | ≥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) | ≤5.0x10-11 | ≤5.0x10-12 | ≤1.0×10-12 |
| Anti-static water pressure | 0.4Mpa,1h, not seepage | 0.6Mpa,1h,not seepage | |
| Filtration loss (ml) | ≤18 | ||
| Bentonite durability (ml/2g) | ≥20 | ||
Performance features