An investigation of fracture initiation and resistance-curve behavior in concrete

J. Lou, K. Bhalerao, A. B.O. Soboyejo, W. O. Soboyejo

Research output: Contribution to journalConference article

Abstract

This paper examines the effects of mix strength on the fracture initiation and resistance-curve behavior of concrete. The fracture initiation toughness and the resistance-curve behavior are shown to increase with increasing mix strength. However, the extent of stable crack growth is shown to decrease with increasing mix strength. The measured resistance-curve behavior is associated with the beneficial effects of crack-tip shielding due to ligament bridging mechanisms. The observed small- and large-scale bridging phenomena are then modeled using fracture mechanics models. The studies show that the measured resistance-curve behavior is predicted largely by considering the beneficial effects of ligament bridging. Finally, the implications of the results are then discussed for the design of durable concrete structures.

Original languageEnglish (US)
Pages (from-to)599-605
Number of pages7
JournalCement and Concrete Composites
Volume25
Issue number6
DOIs
StatePublished - Aug 1 2003
EventMathematics of Data/Image Coding. Compression, and Encryption - San Diego, CA, United States
Duration: Jul 21 1998Jul 22 1998

Keywords

  • Concrete
  • Fracture initiation
  • Resistance-curve behavior

ASJC Scopus subject areas

  • Building and Construction
  • Materials Science(all)

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