| 摘要 |
PROBLEM TO BE SOLVED: To provide a cement composition maintaining physical properties of a cured body, hardly generating flowability reduction described above and little in aging change even with high fineness of a high belite cement.SOLUTION: There is provided a cement composition containing 2CaO SiOof 50 mass% to 70 mass%, 3CaO AlOand 4CaO AlOFeOof total 11 mass% to 15 mass%, and a gypsum having the content of anhydrous gypsum of 70 mass% to 97 mass% of 1.3 mass% to 2.2 mass% in terms of SO, and having a fineness of 3700 cm/g to 4500 cm/g. |
