Reji John*, Surendra P. Shah

*Corresponding author for this work

Research output: Contribution to journalArticle

25 Scopus citations


To evaluate the response of concrete structures subjected to impact or impulsive loading, it is essential to know how cracks propagate under such dynamic loading conditions. Single-edge notched beams were subjected to varying rates of loading to establish the stress intensity factor K//1 versus crack velocity V relationship for mortar and concrete. Impact tests were performed using a modified instrumented Charpy test system. During loading, the rate of crack growth was obtained using special brittle Krak gages. Results indicate the following: (1) For a given strain rate the extent of pre-peak crack growth is larger for concrete than for mortar, (2) Decrease in pre-peak nonlinearity at higher strain rates is probably caused by the decrease in amount of slow (LEFM) approach at high rates may be valid.

Original languageEnglish (US)
Pages (from-to)24-32
Number of pages9
JournalCement, Concrete and Aggregates
Issue number1
StatePublished - Jun 1 1986

ASJC Scopus subject areas

  • Building and Construction
  • Materials Science(all)

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