名古屋大学 · 工学
Taito Miura教授の研究室では、コンクリートの破壊挙動や耐久性に影響を与える微細構造的要因に注目し、ひび割れの角度や幅が圧縮強度や剛性に与える影響を実験的・数値的に解明しています。特に、ひび割れの発達がコンクリートの力学的挙動に及ぼすメカニズムや、硫酸イオンによる内部膨張ひび割れの発達過程を、多スケールな数値モデルを用いて解析しています。研究は、コンクリート構造物の長寿命化と耐久性向上に貢献することを目的としています。
Figures are computed from collected data and may differ slightly.
In this study, uniaxial compression tests using cracked concrete with different crack widths and angles were conducted. The purpose of this study is to clarify influence of crack angle on the compressive fracture process and to understand the reduction mechanism of compressive strength and tangential stiffness due to a primary crack. In this experiment, the changes in strain distribution at the cutting surface during loading were determined by DIC, with the stress-strain relationship and tangent
In this paper, the transformation of solid phase and expansion cracking behaviors due to sulfate attack were evaluated by using RBSM-Truss Network Model. This analysis was constructed by combining a hydration model, a diffusion-reaction model, and a crack propagation model in order to evaluate the influence of feedback system of ion transfer through cracks on transformation of solid phase and expansion cracking behavior due to sulfate attack. As a result, the proposed model can predict the chang
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