Research Article
Utilization of Agroresidual Waste in Effective Blending in Portland Cement
Table 1
Physical and chemical properties of the cement and RHA.
| | Properties | Cement | RHA |
| | Physical properties | | |
| | Moisture content | — | 3.68% | | Specific gravity | 3.12 | 2.08 | | Fineness | 2975 cm2/g | 12.5% (Retained 45 mm sieving) |
| | Chemical composition | | |
| | Silica (SiO2) | 20.44% | 93.15% | | Alumina (Al2O3) | 5.50% | 0.21% | | Iron oxide (Fa2O3) | — | 0.21% | | Calcium oxide (CaO) | 64.86% | 0.41% | | Potash (K2O) | — | 22.31% | | Magnesia (MgO) | 1.59% | 0.45% | | Loss on ignition | 1.51% | 2.36% | | pH | 12.06 | 9.83 | | 3CaOSiO2 | 66.48% | — | | 2CaOSiO2 | 10.12% | — | | 3CaOAl2O3 | 8.06% | — | | 3CaOAl2O3Fe2O3 | 9.43% | — | | Free lime | 1.65% | — |
|
|
