| Composition of Cement | ||||
| S. No. | Constituents | Formula | Range | Average |
| 1 | Lime | (CaO) | 62 - 67% | 63% |
| 2 | Silica | (SiO2) | 17 - 25% | 20% |
| 3 | Alumina | (Al2O3) | 3 - 8% | 6% |
| 4 | Calcium Sulphate | (CaSO4) | 3 - 4% | 3% |
| 5 | Iron oxide | (Fe2O3) | 3 - 4% | 3% |
| 6 | Magnesia | (MgO) | 1 - 2% | 1% |
| 7 | Sulphur | (S) | 1 - 2% | 1% |
| 8 | Alkalies | (K2O, Na2O) | 0.2 - 1% | 1% |
Preparing students for success in a changing World.
We care about our students
RPSC-AE, RSMSSB-JE, SSC-JE, RRB-JE, PSU's