Research Article
Utilization of Iron Ore Tailings as Raw Material for Portland Cement Clinker Production
Table 3
The physical properties of produced Portland cements.
| | Sample | Specific surface (m2/kg) | Consistency/% | Setting time/min | Bending strength/MPa | Compressive strength/MPa | | Initial time | Final time | 3 d | 28 d | 3 d | 28 d |
| | RM-1 | 326.4 | 23.0 | 165 | 225 | 4.9 | 8.5 | 20.7 | 46.2 | | RM-2 | 355.5 | 23.8 | 160 | 235 | 4.9 | 8.7 | 20.8 | 48.6 |
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