Designation Identification | Bentonite of Mostaganem [3] | Bentonite of Maghnia |
Natural water content (%)(1) | 9 | 8.5 |
Specific density of solid grains. Gs(2) | 2.70 | 2.72 |
Percentage of particles < à 80 µm(3) | 100 | 100 |
Percentage of particles C2 < à 2 µm(3) | 46.5 | 42.5 |
Liquidity limit. Wl (%)(4) | 187 | 240 |
Plasticity limit Wp (%)(4) | 45 | 43 |
Plasticity index Ip (%)(4) | 142 | 197 |
Consistency index Ic (%)(4) | 1.25 | 1.18 |
Withdrawal limit Lr (%)(5) | 13 | 10.24 |
Withdrawal index Ir (%)(5) | 174 | 229.76 |
Activity (%) Ac(6) | 3.89 | 6.06 |
Free swelling (ml)(7) | 23 | 35 |
Value of methylene blue test (8) | 8.25 | 18.75 |
specific area (m2/g)(9) | 168 | 394 |
pH(10) | 8.6 | 10.3 |