| abstract |
PROBLEM TO BE SOLVED: To make it possible to increase the amount of waste used as a whole as compared with a conventional general-purpose cement composition and to reduce energy as a whole as compared with a conventional general-purpose cement composition. A cement composition capable of obtaining excellent fluidity as a physical property is also provided. As a clinker in a cement composition, an A clinker close to a general-purpose clinker (the amount of C 4 AF is 5 to 12%, the total amount of C 3 A and C 4 AF is less than 22%, C 3 S Clinker having an amount of 55% or more and an iron ratio (IM) of 1.3 to 2.3] and B clinker [the amount of C 4 AF is 15% or more, C 3 A and C 4 clinker having a total amount of AF of 22% or more, a C 3 S amount of 55% or more, and an iron ratio (IM) of 1.3 or less. By using the B clinker in combination, a cement composition having excellent fluidity can be obtained, and the grindability during production is also excellent. [Selection figure] None |