CA40
CA 40 is a hydraulic binder with an alumina content of approximately 40%. Composed primarily of calcium aluminates, it serves as an outstanding binding agent for refractory applications. The high monocalcium aluminate concentration in CA 40 endows refractory concrete with excellent mechanical strength. However, its iron oxide content makes it unsuitable for use in refractory concretes where iron oxide cannot be tolerated, such as in reducing atmospheres.
Category:
key word:
CA40
CA50
Service Hotline：+86 15617626826
Consult NowIntroduction
CA 40 is a hydraulic binder with an alumina content of approximately 40%. Composed primarily of calcium aluminates, it serves as an outstanding binding agent for refractory applications. The high monocalcium aluminate concentration in CA 40 endows refractory concrete with excellent mechanical strength. However, its iron oxide content makes it unsuitable for use in refractory concretes where iron oxide cannot be tolerated, such as in reducing atmospheres.
Compared to CA 50 aluminate cement, CA 40 boasts a higher iron content, which significantly enhances its resistance to abrasion. This characteristic makes it an ideal choice for producing high-temperature, abrasion-resistant castables.
Once dried, mortars and concretes made with CA 40 release their hydrate water gradually, preserving the matrix’s structural integrity. At temperatures exceeding 1,000°C, ceramic bonds form between the high-alumina cement components and refractory aggregates. These bonds position CA 40 as a premier binder for refractory concretes, mortars, and gunning mixes.
The rheological properties of CA 40 are expertly optimized for a range of application methods, excelling in both casting and gunning techniques. It is particularly recommended for projects requiring rapid hardening and top-tier performance.
Key Features
● Alumina content: ~40%
● High monocalcium aluminate for strength
● Enhanced abrasion resistance due to iron content
● Rapid hardening for fast project timelines
● Forms ceramic bonds above 1,000°C
Benefits
● Delivers long-lasting durability under extreme heat
● Speeds up construction with quick setting times
● Provides versatility for casting and gunning methods
| CA40 | |
| Refractoriness(℃) | 1270 |
| Chemical Composition(%) | |
| Al2O3(%) | 37.0-41.0 |
| CaO(%) | 36.0-40.0 |
| SiO2(%) | |
| Fe2O3(%) | 13.0-17.0 |
| Fineness | |
| Specific Surface of Cement-Blaine Method(m2/kg) |
350-400 |
| Setting Time(min) | |
| Initial Setting Time(min) | 60-130 |
| Final Setting Time(min) | 100-180 |
| Flexural Strength (MPa) | |
| 24h Flexural(MPa) | > 5.0 |
| 72h Flexural(MPa) | > 6.0 |
| Compressive Strength(MPa) | |
| 24h Compressive(MPa) | 50-55 |
| 72h Compressive(MPa) | 55-65 |
Applications
● Refractory linings for furnaces and kilns
● High-temperature castables in steel and cement industries
● Abrasion-resistant structures in heavy industrial settings
MESSAGE
We will contact you within one working day. Please pay attention to your email.
Related products
Calcium Sulphoaluminate Ground Clinker for High-Performance Cementitious Systems
CSA expansive agent is a high-efficiency shrinkage-compensating material formulated by blending carefully selected natural anhydrite with a specially manufactured clinker composed primarily of calcium sulphoaluminate and free lime (CaO). It is designed to be used in combination with ordinary Portland cement.
Rapid Pavement Repair Material
CSA-Based High-Performance Solution for Time-Critical Concrete Restoration
CSA-Based Rapid-Set Solution for Active Water Ingress Control in Concrete Structures
ZHENGZHOU XINMI MOLTEN MATERIAL CO., LTD.
Add：Pingmo Industrial Park, Pingmo Town, Zhengzhou, Henan Province, China
Tel：+86 15617626826
Email：jeffsung@xmmlt.com
Copyright© 2025 Zhengzhou Xinmi Molten Material Co., Ltd. www.300.cn SEO This website supports IPv6 Privacy Policy