| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of manufacturing a curable composition that has, in use of a polycarboxylic acid-based cement dispersant, the superior characteristics of superior fluidity, a short setting time, and an increase in one-day strength.SOLUTION: A method of manufacturing a curable composition includes: a process of obtaining a cement composition by mixing and crushing a clinker, having 30 mass% or more of 2CaO SiOand 2-8 mass% of 3CaO AlOto be calculated from a Bogue expression, and a gypsum; and a process of mixing the cement composition, a polycarboxylic acid-based cement dispersant, an aggregate, and water; wherein a mixture of II type anhydrous gypsum and gypsum dihydrate is used as gypsum. As for the ratio of the II type anhydrous gypsum and gypsum dihydrate in use, the content rate of the II type anhydrous gypsum is preferably 30-70 mass% in terms of SO. |
