Table 1 Physical and chemical properties of cement.
From: Effect of Scoria on Various Specific Aspects of Lightweight Concrete
Specific gravity (g/cm3) | Â | 3.15 | ASTM C 188-03 |
Specific surface (cm2/g) | Â | 3897 | ASTM C 204-05 |
Setting time initial (min) | Â | 30 | ASTM C 191-04 |
Compressive strength (MPa) | Â | Â | Â |
| Â | 1Â days | 10.4 | Â |
| Â | 3Â days | 21.3 | Â |
| Â | 7Â days | 33.5 | Â |
| Â | 28Â days | 43.6 | Â |
Chemical composition, % by mass | Â | Â | Â |
| Â | SiO2 | 20.5 | Â |
| Â | Al2O3 | 4.52 | Â |
| Â | Fe2O3 | 2.71 | Â |
| Â | CaO | 63.93 | Â |
| Â | MgO | 2.39 | Â |
| Â | K2O | 1.01 | Â |
| Â | SO3 | 3.3 | Â |
| Â | Na2O | 0.19 | Â |
| Â | LOI | 0.97 | Â |