journal article·2021-05

Continuum damage-healing framework for the hydration induced self-healing of the cementitious composite

Qing Chen, Xiangyong Liu, Hehua Zhu, J Woody Ju, Xie Yongjian, Zhengwu Jiang, Zhiguo Yan

Publisher page

Abstract

The self-healing materials have become more and more popular due to their active capacity of repairing the (micro-) damages, such as the (micro-) cracks, the (micro-) voids and the other defects. In this paper, the thermodynamic based damage-healing framework is presented for the hydration induced self-healing composite with a compatible healing variable. The new variable is incorporated to consider the time-dependent properties of the hydration products, with which a new damage healing law is proposed. The hydration kinetics are employed to describe the healing process. The properties of the hydration products are arrived with the multiscale and multilevel homogenization scheme. The presented damage-healing model is applied to an isotropic cementitious composite under the tensile loading histories. The presented framework is compared with the classic continuum damage-healing theory and the experimental data. The results show that the presented damage-healing model is capable of describing the hydration induced self-healing of the cementitious composite. It can describe the behavior of the partially and fully healed concrete material. The effects of the healing time and the compatible healing variables on the damage-healing results are investigated based on our proposed framework.
Source: crossref · Quality: baseline

Research context

OpenAlex topics: Microbial Applications in Construction Materials · Polymer composites and self-healing · Innovative concrete reinforcement materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Jiangsu Key Laboratory of Environmental Impact and Structural Safety in Engineering, China University of Mining & Technology, Jiangsu, China

Key Laboratory of Advanced Civil Engineering Materials (Tongji University), Ministry of Education, Shanghai, China

School of Materials Science and Engineering, Tongji University, Shanghai, China

State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University, Shanghai, China

Department of Civil and Environmental Engineering, University of California, Los Angeles, USA

SGIDI Engineering Consulting (Group) Co., Ltd, 38 Shuifeng Road, Shanghai, China

Funding

National Natural Science Foundation of China · the Special Fund for Basic Research on Scientific Instruments of the National Natural Science Foundation of China · Jiangsu Key Laboratory of Environmental Impact and Structural Safety in Engineering, China University of Mining & Technology · the Funds of Fundamental Research Plan for the Central Universities · National key research and development plan

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