FRACTURE ENERGY AND THE COMPLETE TENSILE SOFTENING RESPONSE OF CONCRETE.

Methi Wecharatana, W. J. Chiou

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A simple test specimen for observing the post-peak uniaxial tensile response of concrete is introduced. The test was conducted using the closed-loop strain control and a simple self-interlocked grip. The complete load-displacement curve was monitored until the post-peak stress dropped to zero. The value of the maximum post-peak displacement, which is assumed to be the critical crack opening displacement (COD), is used for normalizing the post-peak stress-displacement relation. This normalized stress-displacement relationship was observed to be unique and may be considered as the materials property. In this study, three mix-proportions of mortar and one mix of concrete were studied. Three controlled grain sizes of sand were used to study the effect of aggregate grain size on the post-peak response of concrete. Fracture energy was also evaluated using different test specimens such as uniaxial tension specimen, notched beam and the compact tension specimen.

Original languageEnglish (US)
Title of host publicationUnknown Host Publication Title
PublisherSoc for Experimental Mechanics Inc
Pages23-30
Number of pages8
ISBN (Print)0912053097
StatePublished - Dec 1 1986

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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