RHEOLOGICAL CONSTANTS MEASUREMENT OF HIGH-FLUIDITY CONCRETE THAT REQUIRES COMPACTION AND VERIFICATION OF ITS EFFECTIVENESS BY MPS ANALYSIS

The purpose of this study is to measure the rheological constants of high-fluidity concrete that requires compaction, and to verify its effectiveness by the reproducibility of slump flow behavior by MPS analysis. Mortar and concrete were regarded as Bingham fluids, and the rheological constants were measured by Sphere pull-up test on concrete matrix mortar. MPS analysis was applied Regularized Bingham model to the flow constitutive equation.As the analysis result, the actual slump flow spread curve was reproduced within the range of the upper and lower limit 95% prediction interval of the measurement error of the rheological constants obtained.