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Chemical composition of building materials.
| Chemical Composition | Kaolin (%) | GGBS (%) |
|---|---|---|
| Silicon dioxide (SiO2) | 46 | 31.7 |
| Aluminum oxide (Al2O3) | 38 | 14.5 |
| Ferric oxide (Fe2O3) | 0.73 | 1.37 |
| Titanium dioxide (TiO2) | 0.19 | - |
| Calcium oxide (CaO) | 0.02 | 38.5 |
| Magnesium oxide (MgO) | 0.06 | 8.13 |
| Sodium oxide (Na2O) | 0.03 | - |
| Potassium oxide (K2O) | 0.65 | - |
| Sulfate as SO3 | - | 2.61 |
| Loss on ignition | 13.7 | - |
| Others | 3.19 |
