Extent of healing of cracked normal strength concrete

Corina Maria Aldea*, Won Joon Song, John S. Popovics, Surendra P. Shah

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

82 Scopus citations

Abstract

The goal of the research presented here is to investigate the extent of healing of cracked concrete. A feedback-controlled test was used to generate a crack with a controlled width in concrete specimens. Then, water permeability was evaluated by a low-pressure water permeability test (WPT). Elastic wave signal transmission measurements were performed immediately after cracking and repeated after 100 days of WPT. Immediately after cracking, water permeability increased and the signal transmission decreased with increasing initial crack width. The water permeability of cracked specimens decreased significantly, whereas the signal transmission increased with time. Both permeability and transmission measurements suggest autogenous healing of the cracks. However, the recovery in signal transmission with crack healing is not as spectacular as changes in permeability, inferring only partial mechanical healing of the cracks.

Original languageEnglish (US)
Pages (from-to)92-96
Number of pages5
JournalJournal of Materials in Civil Engineering
Volume12
Issue number1
DOIs
StatePublished - Feb 2000

ASJC Scopus subject areas

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

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