| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a property evaluation method of fresh concrete capable of obtaining a stable evaluation result.SOLUTION: An evaluation method of concrete includes, with respect to a concrete sample 1 having been subjected to a slump test: a first step of applying vibration until a slump flow D becomes a reference diameter; and a second step of confirming the shape of the upper surface of the concrete sample 1 where the slump flow D becomes the reference diameter. In the method, the upper surface of the concrete sample 1 is colored before performing the slump test, and in the second step, when the outer edge shape of a colored portion 5 of the upper surface of the concrete sample 1 does not keep a circular form, it is evaluated that viscosity of fresh concrete is insufficient.</p> |
