Table 4.
Chemical composition of the wastes.
| Chemical Composition (%) | CDW * | AW ** | MS *** |
|---|---|---|---|
| Silicon dioxide (SiO2) | 57.22 | 10.83 | 5.85 |
| Aluminum oxide (Al2O3) | 7.81 | 59.91 | 0.39 |
| Ferric oxide (Fe2O3) | 3.45 | 2.10 | 0.27 |
| Calcium oxide (CaO) | 12.90 | 2.26 | 48.92 |
| Manganese oxide (MnO) | 0.06 | 0.24 | 0.01 |
| Magnesium oxide (MgO) | 1.50 | 4.82 | 0.16 |
| Sodium oxide (Na2O) | 1.02 | 2.69 | 0.80 |
| Potassim oxide (K2O) | 1.51 | 1.10 | 0.14 |
| Titanium oxide (TiO2) | 0.46 | 0.84 | N.D. |
| Phosphorous pentoxide (P2O5) | 0.10 | 0.04 | 0.07 |
| Sulfur trioxide (SO3) | 1.65 | 0.11 | 0.17 |
| Loss on ignition (L.O.I) | 10.82 | 12.66 | 43.09 |
* CDW: construction and demolition waste; ** AW: aluminium waste; *** MS: Mussel shell.