In this study, two rheology tests were conducted to obtain the rheological constants of mortar. The first was sphere pull-up test, the second was the measurement by using rotational vane viscometer. The rheological constants were obtained by approximating flow curve of each test by Bingham model. Using them, the mini slump test was analytically reproduced by Moving Particle Semi-implicit (MPS) method.The analysis results using the rheological constants of sphere pull-up test agreed with the flow spread and slump shape. Therefore, the rheological constants obtained by the experiment are effective for the MPS analysis.
In this study, we assumed that the cement paste and mortar are continuums and proposed a rheological constants estimation equation that can be applied to both cement paste and mortar. After that, the effectiveness of the proposed equations was verified using MPS analysis, and the effectiveness was confirmed in cement paste and low-fluidity mortar. However, for high-fluidity mortar, the actual measurement results could not be reproduced well by MPS analysis. In the case of high-fluidity mortar, the actual measurement results could be reproduced well in the MPS analysis considering thixotropy .
The purpose of this study is to reveal conditional mixproportions of concrete for fluidity and segregation resistance. Therefore, we organized changes in conditional mixproportions of JASS 5. In addition, this paper showed preparation conditions such as unit cement content, unit water content, etc., for each target slump and target slump flow by literature surveys.
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