Kerui Ferroaluminate cement is primarily composed of calcium aluminate (CA) as its main mineral phase, with a rich content of ferrite phase (C4AF). It outperforms Portland cement in multiple aspects, offering rapid setting, fast hardening, quick drying, early strength development, high-temperature resistance, controllable volume changes before and after hardening, as well as resistance to weak acids and bio-sourced sulfuric acid corrosion. Widely applied in chemical building materials, high-performance concrete, sewage and pipeline engineering, mining, refractory materials, and other industries.
| Itam | CA40 | CA41 | |||
|---|---|---|---|---|---|
| - | Standard | Typical range | Standard | Typical range | |
| Chemical Composition(%) | |||||
| Al2O3 | 37.0-41.0 | >37.0 | 43.0-48.0 | >43.0 | |
| CaO | 36.0-40.0 | <41.0 | 35.0-38.0 | <40.0 | |
| SiO2 | - | <6.0 | - | <7.0 | |
| Fe2O3 | 13.0-17.0 | <18.0 | 4.0-9.0 | <10.0 | |
| MgO | - | <1.5 | - | <1.5 | |
| TiO2 | - | <3.0 | - | <3.0 | |
| R2O | - | <0.5 | - | <0.5 | |
| S | - | <0.1 | - | <0.1 | |
| CL- | - | <0.06 | - | <0.06 | |
| Finess | |||||
| +45μm(%) | - | <15.0 | - | <15.0 | |
| S(m2/kg) | 350-400 | >300 | 350-400 | >300 | |
| Setting Time(min) | |||||
| IS | 60-130 | >45 | 100-180 | >90 | |
| FS | 100-180 | <240 | 120-200 | <300 | |
| Flexural Strength(MPa) | |||||
| 6h | - | >4.0 | - | >4.0 | |
| 1d | - | >5.0 | - | >6.0 | |
| 3d | - | >6.0 | - | >6.5 | |
| Compressive Strength(MPa) | |||||
| 6h | - | >30 | - | - | |
| 1d | 50-55 | >50 | 55-60 | >55 | |
| 3d | 55-65 | >55 | 60-70 | >60 | |
| Workability(Spreadafter 15min)(%) | - | >30 | - | >50 | |
| Refractoriness (℃) | - | 1270℃ | - | 1310℃ | |
| Bulk density (kg/m3) | - | 900-1000 | - | 900-1000 | |
| Specificgravity (g/cm3) | - | 2.9-3.1 | - | 2.9-3.1 | |
1. Superior rapid hardening and early strength; 2. Excellent high-temperature resistance; 3. Outstanding wear resistance; 4. Unique resistance to weak acids and bio-sourced sulfuric acid erosion.
Ferric aluminate cement has diverse applications. Its excellent high – temperature resistance makes it ideal for high – temperature resistant engineering like blast furnace and kiln linings. Its rapid hardening and high early – strength suit emergency repair. It’s used in projects needing high corrosion resistance in salty or acidic areas. It also meets specific needs in special concretes, mortars, and is sometimes applied in decorative building materials for good workability and decorative effects.