| 摘要 |
PROBLEM TO BE SOLVED: To provide a high fluidity concrete evaluation method for evaluating chronological fluidity of high fluidity concrete.SOLUTION: In evaluation of chronological change of high fluidity concrete, an object with slump flow of 50-70 cm by a test method of JIS A 1150 is targeted, and chronological change is evaluated by an expression of 10>D-E. D is a slump flow value after being stood for five minutes in a mixer, kneaded and mixed for 15 seconds, and E is a slump flow value of 60 minutes later of kneading and mixing. When D-E is less than 10 cm, it is evaluated that change of chronological fluidity of the high fluidity concrete is small, and when D-E is 10 cm or more, it is evaluated that the change of the chronological fluidity is large. |
