|
| Type of bentonite | Studied content of bentonite | Optimal content of bentonite | KOptimal (m/s) | Référence |
| SP sand | Calcium | 0% - 20% | 15% | 10−9 | [3] [4] |
| SW sand | Sodium | 0% - 10% | 5% | ||
| SM sand | |||||
| SM sand | Sodium | 0% - 6% | 4% | 10−11 | [3] [5] |
| Silicate sand | Sodium | 5% - 50% | 50% | 1.21 × 10−12 | [3] [6] |
| Dune sand | Calcium | 0% - 15% | 15% | <10−8 | [7] |