Description
Kerui Ferroaluminate cement, also called calcium ferroaluminate cement(CFA), 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.
Advantages of Kerui Calcium Ferroaluminate Cement
- Superior rapid hardening and early strength
- Excellent high-temperature resistance
- Outstanding wear resistance
- Unique resistance to weak acids and bio-sourced sulfuric acid erosion
Applications of Kerui Calcium Ferroaluminate Cement
Calcium Ferroaluminate Cement has broad applications in underground utility tunnels, urban renewal, marine engineering, low-temperature construction, major infrastructure projects, emergency repairs, and waterproofing.
1. Chemical Building Materials
Used in self-leveling flooring materials, rapid-construction flooring systems, binders for European-style architectural decorations, tile adhesives, tile grouts, sealants, base mortars, and repair mortars.
2. High-Performance Concrete
- Protective surface concrete: Suitable for hydraulic structures in high-temperature/thermal shock environments, abrasion-prone or mechanically impacted areas, industrial weak-acid exposure zones, and bio-corrosive sewage systems.
- Rapid-setting concrete: Ideal for expressways, airport runways, bridge joints, and industrial facilities requiring urgent repairs and immediate use.
- Marine engineering: Resists chemical erosion from SO₄²⁻, Cl⁻, Mg²⁺ ions, seawater scouring, wear, and freeze-thaw cycles.
3. Sewage and Pipeline Engineering
Calcium ferroaluminate cement’s exceptional corrosion resistance and durability make it suitable for sewage pipe linings, anti-corrosion mortar layers in sewage tanks, manholes, pumping stations, and wastewater treatment plants.
4. Mining Industry
- Fast-hardening concrete: For rapid construction in transport tunnels, worksite reinforcements, and equipment foundations.
- Abrasion- and shock-resistant concrete: Applied to shaft linings, loading zones, and protective surface layers for ore silos.
- Acid-resistant concrete: Withstands flowing acidic water corrosion (pH 3.5–4).
- Mining additives: Used as rapid hardeners for goaf backfill materials, solidifiers for mining sludge/waste sand, and quick-setting agents for grouting mortars.
5. Refractory Materials
- Serves as a binder for medium-to-low temperature refractories (refractoriness: 1300°C).
- Formulates high-temperature-resistant and wear-resistant castables.
- Combined with refractory aggregates for specialized applications.
Parameters of Kerui Calcium Ferroaluminate Cement
| 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 | |
Mineralogical Composition
- Principalphase:CA
- Secondaryphase:C4AF、C12A7、C2AS
Packaging and Storage
- Paper bags：25/50kg
- Big bags:1.0/1.5mt
- Bulk
Storage and Shelflife
- Preserve packaging integrity and store in a dry environment.
- Avoid direct ground contact; place on moisture-proof mats or pallets to prevent moisture-induced clumping.
- Standard shelf life: 2 months. Under optimal conditions, shelf life extends to 3+ months.
