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

Lv, Le Yang; Zhang, H.; Schlangen, E.; Yang, Z.; Xing, Feng

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

Journal article (2017)

Authors

Le Yang Lv Shenzhen University

H. Zhang Materials and Environment -

E. Schlangen Materials and Environment -

Z. Yang Fuzhou University, Washington State University Pullman

Feng Xing Shenzhen University

Research Group

Materials and Environment () (TU Delft)

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

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Published Date

15-12-2017

Language

English

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Faculty

Civil Engineering & Geosciences

Department

Materials- Mechanics- Management & Design

Research Group

Materials and Environment

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.

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