No. | Specification | TCVN7024:2002 Standard | Result |
1 | Insoluble residue | ≤ 0.75% | 0.45 – 0.65% |
2 | Loss on Ignition (lg-loss) | ≤ 1.5% | 0.5 – 0.8% |
3 | Magnesium Oxide (MgO) | ≤ 5% | 0.7 – 1.2% |
4 | Alkaki (Na2O + 0.658K2O) | ≤ 0.6% | ≤ 0.6% |
5 | Sulfate (SO3) | ≤ 1.5% | 0.2 – 0.4% |
6 | Silicon Dioxide (SiO2) | - | 21 – 22% |
7 | Calcium Oxide (CaO) | - | 65 – 66% |
8 | Aluminium Oxide (Al2O3) | - | 4.8 – 5.5% |
9 | Ferric Oxide (Fe2O3) | - | 3 – 3.5% |
10 | Tricalcium Silicate (C3S) | - | ≥ 55% |
11 | C2S | - | ≥ 12 % |
12 | C3A | - | ≤ 10% |
13 | Moisture | ≤ 1.5% | < 0.5% |
14 | Freelime (f-CaO) | ≤ 1.5% | ≤ 1.5% |
15 | Particle size: 1mm under 25mm under and 5mm above | < 10% > 50% | 5 – 8% 65 – 70% |