A state-of-the-art review of the development of self-healing concrete for resilient infrastructure

Abstract

The brittleness of cement composites makes cracks almost inevitable, producing a serious limitation on the lifespan, resilience, and safety of concrete infrastructure. To address this brittleness, self-healing concrete has been developed for regaining its mechanical and durability properties after becoming cracked, thereby promising sustainable development of concrete infrastructure. This paper provides a comprehensive review of the latest developments in self-healing concrete. It begins by summarizing the methods used to evaluate the self-healing efficiency of concrete. Next, it compares strategies for achieving healing concrete. It then discusses the typical approaches for developing self-healing concrete. Finally, critical insights are proposed to guide future studies on the development of novel self-healing concrete. This review will be useful for researchers and practitioners interested in the field of self-healing concrete and its potential to improve the durability, resilience, and safety of concrete infrastructure.

Graphical abstract

Keywords

resilient infrastructure / sustainable concrete / self-healing / cracks

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Acknowledgements

We would like to express our sincere gratitude and appreciation to the Geo-Transportation Laboratory at The Hong Kong Polytechnic University for the invaluable support and contribution to our work. The expertise and resources provided by the laboratory have been instrumental in helping us to achieve the research goals and to advance our knowledge in the field of Geo-Transportation Engineering.

Competing interests

The authors declare that they have no competing interests.

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