AUTHOR=Zhang Shibing , Sun Zhen , Zhou Junli , Yang Bo , Zhang Jiuchang , Cui Zhihao TITLE=Numerical Analysis of Effective Permeability of Concrete-Like Material With a Random Three-Phase Mesostructure JOURNAL=Frontiers in Physics VOLUME=9 YEAR=2021 URL=https://www.frontiersin.org/journals/physics/articles/10.3389/fphy.2021.752589 DOI=10.3389/fphy.2021.752589 ISSN=2296-424X ABSTRACT=

Interfacial transition zone (ITZ) is an important component of a concrete-like material. Accurately simulating the ITZ's characteristics of the concrete-like materials is a difficult process in numerical simulation. This article proposed a random three-phase mesostructural modeling method using the incorporation of random aggregate generation, Minkowski sum theory, and polygon union techniques. It was found that this method can better simulate the mesostructure and ITZ characteristics of concrete-like materials. By using this method, a random three-phase mesostructural model had been built for conducting a finite element analysis to investigate the effective permeability parameters of concrete. A good agreement between numerical and experimental results indicates the feasibility of this method in the concrete-like material analysis.