
IRC50 - alcium Aluminate Cement
IRC-50 is a hydraulic cement with a high alumina content of approximately 50% . IRC-50 is a fused product with a mineralogy focused on CA to give strong hydraulic activity and impart excellent mechanical properties to conventional concretes.
The low iron oxide content of IRC-50, when combined with appropriate aggregates, makes it particularly suitable for concretes having to withstand carbon monoxide reducing atmospheres.
IRC-50 does not contain any additives, its use is recommended for refractory premixes.
Like other type of hydraulic binders, IRC-50 must be stored in dry conditions. It will retain its properties for at least 6 months, in many instances even its properties are retained for more than one year.
Physical Properties :
Spec | Usual Range | Specification Limit | |
Residue at 90 microns: | < 5% | ||
Fineness (as measured by Blaine apparatus): | 3800-4200 | > 2700 cm2/g | |
Bulk density: | 900-1000 kg/m3 | ||
Specific gravity: | 2.95-3.1 g/cm3 | ||
Initial set (by Vicat needle): | 360 min | > 120 min | |
Compressive strength after 24 hours: | 550-650 | > 300 kg/cm2 |
Chemical Composition (%)
49-53 % | Al2O3 |
< 8 % | Si2O |
36-39 % | CaO |
< 2 % | Fe2O3 |
< 2 % | Ti2O |