Experimental study on self-healing capability of cracked ultra-high-performance hybrid-fiber-reinforced cementitious composites

Sukmin Kwon, Tomoya Nishiwaki, Takatsune Kikuta, Hirozo Mihashi

Research output: Contribution to journalConference articlepeer-review

2 Citations (Scopus)

Abstract

High-performance fiber-reinforced cementitious composites demonstrate very good self-healing capability after immersion in water due to the closely spaced multiple cracks. To investigate the self-healing capability of ultra-high-performance hybrid-fiber-reinforced cementitious composite (UHP-HFRCC), some experiments were carried out that focused on the recovery of the air permeability coefficient and chemical precipitation on the crack surface. After cracks were introduced, the specimens were placed under uniaxial tensile load, inducing up to 0.2% strain; these cracked specimens were then immersed in water to initiate self-healing. The self-healing performance of the specimens was investigated by means of microscopic observation and an air permeability test. As a result, UHP-HFRCC was confirmed to have crystallization products within its cracks and its air permeability coefficient was recovered significantly, which means UHP-HFRCC has great potential for self-healing.

Original languageEnglish
Article numbere271
JournalSustainable Construction Materials and Technologies
Volume2013-August
Publication statusPublished - 2013
Event3rd International Conference on Sustainable Construction Materials and Technologies, SCMT 2013 - Kyoto, Japan
Duration: 2013 Aug 182013 Aug 21

Keywords

  • Air permeability test
  • Self-healing
  • Torrent test
  • UHP-HFRCC

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Mechanics of Materials
  • Materials Science(all)

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