Study on influence of aggregate particle on rheological property of fresh concrete
Mishima Naoki; Tanigawa Yasuo; Mori Hiroshi; Kurokawa Yoshiyuki; Terada Ken-ichi; Hattori Toshinori
Abstract:In this study, two-dimensional shear deformational behavior of solid-liquid two-phase model material was grasped experimentally and analytically, and the influence of aggregate particle was discussed rheologically. As the results, the behavior of matrix around aggregate particles under shear deformation was observed, and this behavior can be simulated by two-dimensional viscoplastic finite element method (VFEM). According to the result of numerical analysis, the viscosity of suspension increases with increasing of dispersing degree of aggregate particle. Furthermore, in the experiment used the materials with many aggregate particles, the mechanism of increasing of rheological constants with the touch of aggregate particles was examined. Key Words:fresh concrete, solid-liquid two-phase material, aggregate particle, yield value, plastic viscosity, thickness of layer of excess matrix