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Portland cement chemical compositions.
| Items | Limit | Results |
|---|---|---|
| SiO2 (%) | - | 19.7 |
| Al2O3 (%) | 6.0 max | 4.5 |
| Fe2O3 (%) | 6.0 max | 3.5 |
| CaO (%) | - | 63.1 |
| MgO (%) | 6.0 max | 1.4 |
| SO3 (%) | 3.0 max | 2.9 |
| Loss on Ignition (%) | 3.5 max | 1.2 |
| Insoluble Residue (%) | 1.5 max | 0.3 |
| CO2 (%) | - | 0.5 |
| CaCO3 in limestone (%) | 70 min | 90 |
