| Material property | Test method | Rewuired values |
| Bentoniteswell index | ASTMD5890 | 24ml/2g/min |
| Bentonite fluid loss | ASTMD5891 | 18ml max |
| Bentonite mass/area 2 | ASTMD5993 | 4.0kgs/m2/min |
| GCL Grab strenth | ASTMD4632 | 600N |
| Gcl peel strength | ASTMD4632 | 65 N min |
| GCL Index Flux | ASTMD5887 | 1X10 -8 m 3 /m 2 /sec |
| Gcl permeability | ASTMD5887 | 5x10 -12 cm/sec |
| Gcl hydrdtred intemal shear strength | ASTMD5321 | 24kpa typical |