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Elemental compositions of the ordinary Portland cement (OPC) and fly ash.
| Oxides (%) | SiO2 | Al2O3 | Fe2O3 | CaO | SO3 | K2O | TiO2 | SrO | P2O5 | Loss on Ignition |
|---|---|---|---|---|---|---|---|---|---|---|
| OPC | 20.06 | 4.93 | 2.86 | 63.94 | 3.67 | - | - | - | - | 1.45 |
| Fly Ash | 75.64 | 12.04 | 3.36 | 2.35 | 1.5 | 2.02 | 1.20 | 0.1 | 1.7 | 2.36 |
