Rational flow constitutive equation and development of flow analytical method of fresh concrete

本研究的目的是建立合理的流动本构方程，发展新拌混凝土的流动分析方法。我提出了考虑应变率依赖于水泥颗粒絮凝结构破坏过程的流动曲线预测方程。这个建议方程改进了一个Roscoe方程，我从旋转粘度计的实验结果中求出了该方程的系数。然而，该方程适用于砂浆和混凝土。对于新混凝土的流动模拟，我发展了新的分析方法，MPS(移动粒子半隐式)方法和标记粒子粘塑性有限元方法。这些分析方法支持宾汉模型引起的材料非线性。这些分析方法的分析结果与过去的实验结果相同。

The purpose of this research is the establishment of rational flow constitutive equation and development of flow analytical method of fresh concrete.I proposed the flow curve predictive equation that considered the strain rate depend on the flocculation structure destruction process of cement particles. This proposal equation improved a Roscoe's equation.I found the coefficient of the equation from the rotational viscometer experiment results.This proposal equation refers to the cement paste. However, this equation can apply to mortar and concrete.For flow simulation of the fresh concrete, I developed new analytical methods, MPS(Moving Particle Semi-implicit) method and marker particle visco-plastic F. E. M. These analytical methods support materials nonlinearity caused by Bingham model. These analytical methods showed an analysis result equal to experiment results of the past.