Properties of concrete subjected to impact

Wimal Suaris, Surendra P. Shah

Research output: Contribution to journalArticlepeer-review

87 Scopus citations

Abstract

For rational design of concrete structures subjected to impact and impulsive loading, the constitutive properties of concrete over a wide range of strain rates are required. With this aim in mind, concrete and fiber reinforced concrete beams were tested in a drop-weight, instrumented impact testing machine. During the impact event, loads, deflections and strains were monitored. The modulus of rupture at high strain rates obtained in impact loading was up-to twice that observed at low strain rate (static loading). With increasing strain rate, the load-deflection curves became less nonlinear. The energy absorbed by fiber reinforced concrete beams was as much as 100 times that for unreinforced beams. The influence of matrix mix proportions, relative humidity during curing and the type of Bbers (steel, polypropylene and glass) on impact properties are presented. Cracking appears to be the major process responsible for the observed strain-rate effects in concrete and fiber reinforced concrete.

Original languageEnglish (US)
Pages (from-to)1727-1741
Number of pages15
JournalJournal of Structural Engineering (United States)
Volume109
Issue number7
DOIs
StatePublished - Jan 1 1983

ASJC Scopus subject areas

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

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