Nagoya University · Engineering
Professor Taito Miura's research lab specializes in the mechanical behavior and durability of concrete materials, with a focus on fracture mechanics, crack propagation, and long-term performance under environmental degradation. The lab investigates the influence of microstructural features—such as crack geometry and hydration products—on compressive strength and stiffness reduction, particularly under sulfate attack. Advanced experimental and computational methods, including digital image correlation (DIC) and truss network modeling, are employed to simulate and analyze the evolution of damage and phase transformation in concrete. The lab's work bridges material science and structural engineering to develop predictive models for sustainable infrastructure.
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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