| 摘要 |
PROBLEM TO BE SOLVED: To provide a mixed cement and a composition of the mixed cement with a stable quality by reducing the amount of cement used and adding a blast furnace slag fine powder or the like.SOLUTION: There is provided a mixed cement having 30.5 to 34 pts.wt. of cement, 66 to 68 pts.wt. of a blast furnace slag fine powder to which gypsum is added and 0 to 1.5 pts.wt. of fly ash by mixing the cement, the blast furnace slag fine powder and the fly ash so that the total thereof is 100 pts.wt. to prepare a premix material. There is provided a mixed cement composition by mixing water, a fine aggregate and a coarse aggregate with the cement.SELECTED DRAWING: None |
