Abstract
This paper introduces a multiscale modeling approach to simulate the macromechanical properties of cementitious composites with polyurethane reinforcement. The polyurethane inclusions to hydrated cement paste matrix are represented by continuum 3D elements. Simulations of the real phenomenon that occur at the micro level of the composite have been done by mean-field homogenization technique and finite element analysis. The multiscale model presented in this work enables us to evaluate the stress–strain behavior and other engineering properties. Different configurations of polyurethane cement composite have been studied including variation of loading conditions, weight fraction of polyurethane and the aspect ratios of the polyurethane inclusion. The effect of shape and alignment of polyurethane on the stiffness of the composite has also been evaluated. Strength and stiffness values obtained from the proposed approach are in good agreement with that obtained from open literature.
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