1.High Early Strength: Rapid strength gain, suitable for quick repairs.
2.Heat Resistance: Performs well in high-temperature environments.
3.Chemical Resistance: Excellent resistance to acids and sulfates.
4.Fast Setting: Sets and hardens quickly, reducing construction time.
5.Durability: Strong long-term durability in harsh conditions.
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Calcium aluminate cement is a cement containing calcium monoaluminate (CaO·Al 2 O 3 ) or calcium aluminate (CaO·2Al 2 O 3 ) as the main mineral component. It is made of natural bauxite or industrial alumina and calcium carbonate (limestone) in a certain proportion, calcined or electrofused, and also made by mixing iron bauxite and limestone. Calcium aluminate cements are cements consisting predominantly of hydraulic calcium aluminates. Alternative names are “aluminous cement”, “high-alumina cement” and “Ciment fondu” in French. They are used in a number of small-scale, specialized applications.
| Calcium Aluminate Cement | ||||||
| CA-65 | CA-68 | CA-70 | CA-75 | CA-80 | ||
| Chemical Composition (%) |
Al2O3 | 64-66 | 67-69 | 69-71 | 73-75 | 77-80 |
| CaO | 32-34 | 29-31 | 27-29 | 23-25 | 18-20 | |
| SiO2 | 1.8 | 1.2 | 0.3 | 0.3 | 0.3 | |
| Fe2O3 | 0.6 | 0.6 | 0.3 | 0.3 | 0.3 | |
| Specific Surface (cm2/g) |
4500 | 4500 | 5000 | 5500 | 7000 | |
| Setting time (h:min) |
Initial setting (min) |
0:40 | 0:40 | 0:40 | 0:45 | 0:45 |
| Final Setting (min) |
8:00 | 8:00 | 10:00 | 10:00 | 10:00 | |
| Cold Modulus of Rupture (MPa) |
24 hour | 6.0min | 6.0min | 6.0min | 6.0min | 5.0min |
| 72 hour | 8.0min | 8.0min | 8.0min | 8.0min | 6.0min | |
| Cold Crushing Strength (Mpa) |
24hour | 45.0min | 45.0min | 45.0min | 45.0min | 35.0min |
| 72hour | 70.0min | 70.0min | 70.0min | 70.0min | 60.0min | |
| Refractoriness (°C) |
1680 | 1710 | 1730 | 1750 | 1770 | |
Calcium aluminate cement is mainly used in coke ovens, glass kilns, blast furnace hot blast furnaces, and other industrial kilns.Applied industries: metallurgy, building materials, machinery, petrochemical, glass, boilers, electricity, steel, cement, and so on.
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