Self-healing of Micro-cracks in Engineered Cementitious Composites

Benny Suryanto, Sam A. Wilson, William John McCarter

Research output: Contribution to journalArticle

Abstract

The performance of an Engineered Cementitious Composite (ECC) to self-heal micro-cracks under a controlled laboratory environment is presented. Ten dog-bone shaped samples were prepared; five of them were preloaded to known strains and then left to heal in water in a temperature-controlled laboratory. Ultrasonic pulse velocity (UPV) measurements were undertaken to monitor the crack-healing process. It was found that all samples exhibited recoveries in UPV and were able to recover to between 96.6% and 98% of their pre-test UPV values over a period of four weeks. An accelerated rate of healing was observed in the initial two-day period immediately following the preloading test.
Original languageEnglish
Pages (from-to)187-194
Number of pages8
JournalCivil Engineering Dimension
Volume17
Issue number3
Publication statusPublished - 2015

Keywords

  • cementitious composite
  • ECC
  • self-healing
  • crack
  • ultrasonic pulse velocity

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