The use of additive manufacturing in self-healing cementitious materials: A state-of-the-art review

Zhi Wan*, Yading Xu, Shan He, Erik Schlangen, Branko Šavija

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

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Abstract

This paper presents a state-of-the-art review on the application of additive manufacturing (AM) in self-healing cementitious materials. AM has been utilized in self-healing cementitious materials in three ways: (1) concrete with 3D-printed capsules/vasculatures; (2) 3D concrete printing (3DCP) with fibers or supplementary cementitious materials (SCMs); and (3) a combination of (1) and (2). 3D-printed capsules/vascular systems are the most extensively investigated, which are capable of housing larger volumes of healing agents. However, due to the dimension restraints of printers, most of the printed vasculatures/capsules are in small scale, making them difficult for upscaling. Meanwhile, 3DCP shows great potential to lower the environmental footprint of concrete construction. Incorporation of fibers and SCMs helps improve the autogenous healing performance of 3DCP. Besides, 3D-printed concrete with hollow channels as the vasculature could further improve the autonomous healing and scalability of self-healing cementitious materials. Finally, possible directions for future research are discussed.

Original languageEnglish
Article number100334
Number of pages14
JournalDevelopments in the Built Environment
Volume17
DOIs
Publication statusPublished - 2024

Keywords

  • 3D concrete printing
  • Additive manufacturing
  • Capsule
  • Self-healing cementitious materials
  • Vascular system

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