(CA50-N) Super-early-strength Calcium Aluminate Cement
Produced by well-selected bauxite and superior limestone through strict components control and perfect temperature control in rotary kiln and fine milling. Its character and quality equal Lafarge's products of same type.
Specification:
Chemical composition%
Al2O3 55
SiO2 6.5max
Fe2O3 2.5max
R2O 0.4max
S -
Cl -
Physical properties
Fineness
Blaine m2/kg 300min
Setting time
Initial min 30min
Final h 6max
Flexural strength MPa
6h 4.0
1d 6.0
3d 7.0
Compressive strength Mpa
6h 30
1d 50
3d 60
Character & uses:
1. The setting time is normal. It's quick hydrating and hardening property makes high strength in short time. Its strength can reach 30Mpa in 6 hours after hydrating, and 50Mpa in 24 hours.
2. It is easy to blend and this is important to concrete and mortar.
3. It is an ideal binder for rapid-hardening and high-strength low cement castables.
4. It is also suitable for high alumina or fireclay low cement refractory castables used under 1450ЃЋ.
5. Its price is much lower than pure calcium aluminate so that it can make the cost lower.
6. It needs moisture-proof protection and can be used at least within six months if it is stored under dry conditions.