Modeling of concrete’s meso-structure by phase-field method and its application to numerical experiment

Mao Kurumatani, Takumi Kato, Mayu Muramatsu

Research output: Contribution to journalArticlepeer-review

Abstract

This paper proposes a method for modeling three-dimensional (3D) concrete’s meso-structure composed of mortar and coarse aggregates. The method consists of an automatic generation of coarse aggregates and their random arrangement in concrete’s domain. The phase-field method is applied to generate large number of coarse aggregates, each of which has arbitrary 3D shape. The aggregates are arranged randomly in concrete’s domain by repeating trial-and-error calculation with random numbers. After explaining the modeling procedure, several numerical examples are presented to demonstrate the validity and availability of the proposed method. First, the comparison of meso-scale model with an actual concrete verifies the validity of the method. The availability is then demonstrated by generating concrete’s meso-scale models with various grain size distributions. Finally, the application to a numerical experiment reveals that the proposed method allows the simulation of 3D crack propagation behavior in concrete’s meso-scale.

Original languageEnglish
Article number20200008
JournalTransactions of the Japan Society for Computational Engineering and Science
Volume2020
DOIs
Publication statusPublished - 2020

Keywords

  • Coarse aggregate
  • Concrete
  • Crack growth
  • Meso-scale
  • Multi phase-field model

ASJC Scopus subject areas

  • Computer Science(all)
  • Engineering(all)

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