Experimental and numerical study of crack behaviour for capsule-based self-healing cementitious materials

Le Yang Lv, Hongzhi Zhang, Erik Schlangen, Zhengxian Yang, Feng Xing

Research output: Contribution to journalArticleScientificpeer-review

12 Citations (Scopus)

Abstract

A 2D lattice model was constructed to simulate crack process of in shell-interlayer-cement paste zone. The simulated tensile strength was validated by an experimental uniaxial tensile test and used as the input for a 3D lattice model, which was constructed to perform mechanical analysis based on a series of 2D X-ray microtomography images. The fracture behaviour of the 3D lattice model with assigned mechanical properties gave a similar crack pattern and tensile strength as the real structure. This study is expected to provide a feasible approach for investigating the fracture and trigger behaviour miccrocapsules embedded in a self-healing cementitious system.

Original languageEnglish
Pages (from-to)219-229
Number of pages11
JournalConstruction and Building Materials
Volume156
DOIs
Publication statusPublished - 15 Dec 2017

Keywords

  • Crack behaviour
  • Numerical simulation
  • Self-healing materials
  • X-ray microtomography

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