Cement composition and hydraulic composition
(22) 12.12.2023
(43) 20.06.2024
(57) Provided are a cement composition that contains a crushed product of a sintered material as a cement admixture, that has excellent strength development, and that can reduce the total amount of carbon dioxide released by absorbing and fixing a large amount of carbon dioxide during the curing process, and a hydraulic composition containing said cement composition. A cement composition containing (A) a powdered cement-containing material containing a crushed product of a sintered material that contains (i) a Portland cement or a Portland cement clinker crushed product and (ii) 2CaO·SiO2 and 2CaO·Al203·Si02 and that satisfies conditions (1) and (2) and (B) (iii) an amine. (1) The amount of the 2Ca0·Al2O3·SiO2 per 100 mass parts of the 2CaO·SiO2 is 10-100 mass parts. (2) The sintered material is free of 3CaO·Al2O3 or contains the same in an amount of 15 mass parts or less per 100 mass parts of the 2CaO·Si02.
(71) TAIHEIYO Cement Corporation, Tokyo (JP)
