| 摘要 |
PROBLEM TO BE SOLVED: To provide a concrete material in which while a unit water content and a used amount of a chemical admixture that are approximately equal to those in a case in which only cement is used are secured, lowering of slump by a lapse time from milling finish can be made small.SOLUTION: The concrete material is a concrete material that is produced such that a mixed cement including at least 70 mass% of an admixture, an aggregate, water, and a chemical admixture are mixed. The blending of the concrete material is made by addition amounts of a prescribed water cement ratio, a unit water content, a fine aggregate ratio and a chemical admixture that are necessary in a case in which only a cement is used to produce a concrete material, however, a chemical admixture that includes a constant amount of a thickener is used as the chemical admixture. |
