| item | GCL-NP | GCL-OF | GCL-AH | |
| g/m2 | ≥4000 | ≥4000 | 4000 | |
| ml/2g swell index | ≥ 24 | ≥ 24 | ≥ 24 | |
| g/100g | ≥ 30 | ≥ 30 | ≥ 30 | |
| N/100mm tensile strength | ≥ 600 | ≥ 700 | ≥ 600 | |
| Elongation at max load | ≥ 10 | ≥ 10 | ≥ 8 | |
| N/100mm peel strength | Nonwoven geotextile and woven geotextile | ≥ 40 | ≥ 40 | ≥ --- |
| PE geomembrane and Non-woven geotextile | ---------- | ≥30 | ---- | |
| m/s permeability | ≤5.0*10-11 | ≤5.0*10-12 | ≤ 1.0*10-12 | |
| Resistance hydraulic pressure |
0.47Mpa,1h
0.4Mpa,1h,no leakage |
0.6Mpa,1h 0.6Mpa,1h,no leakage | 0.6Mpa,1h0.6mpa,1h,noleakage | |
| ml fulid loss | ≤ 18 | ≤ 18 | ≤ 18 | |
| Durability of bemonite(Ml/2g) | ≥ 20 | ≥ 20 | ≥ 20 | |