Cement clinker, method of manufacturing the same and cement composition

摘要

A cement clinker which can be sintered at 1,300 to 1,400° C. which is lower than the conventional sintering temperature and develops excellent strength characteristics such as mortar compression strength.;The cement clinker has a total content of C3A and C4AF calculated by Bogue's formulas of 22 mass % or more, a C3S content calculated by Bogue's formula of 60 mass % or more and an iron modulus (I.M.) of 1.3 or less, preferably 1.0 to 1.3. Since the total content of C3A and C4AF is 22 mass % or more, the cement clinker can be sintered at a low temperature and the reduction of strength when a cement composition is cured can be prevented by reducing the iron modulus of the cement clinker.

主权项

1. A method of manufacturing a cement clinker, comprising the steps of:
preparing raw materials to achieve, when sintered at 1,350° C. for 90 minutes, a total content of tricalcium aluminate (3CaO.Al2O3) and tetracalcium aluminoferrite (4CaO.Al2O3.Fe2O3) calculated by Bogue's formulas of 22 mass % or more and a tricalcium silicate (3CaO.SiO2) content calculated by Bogue's formula of 60 mass % or more and an iron modulus (I.M.) of 1.3 or less; and sintering the raw materials at 1,300 to 1,400° C.