| Pulverulent material | Clay | Specific Mass | Water absorption |
Candonga tailing | 28 wt% | 5 - 11 wt% | 2781.54 kg/m3 | 0.71 wt% |
Natural sands | ~1 wt% | no - 1 wt% | ~2620 kg/m3 | ~1.2 wt% |
| Humidity | Unit mass | Swelling | Organic matter* |
Candonga tailing | 1.76 wt% | 1656.95 kg/m3 | 1.192 | Yes |
Natural sand | ~2 wt% | 1300 - 1750 kg/m3 | ~1.6 | No |