Review of bond and tensile durability of a GFRP reinforcement bar in concrete

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

Abstract

Bond and tensile durability of a glass fiber reinforced polymer (GFRP) bar used as flexural reinforcement in concrete beams has been investigated. Beams were pre-cracked and subjected to a constant sustained flexural load in indoor, outdoor, elevated temperature aqueous alkaline, freeze/thaw environments for up to 36 months. Crack widths were recorded during the sustained loading. Following conditioning, the beams were unloaded and subjected to eccentric 3-pt. flexure testing to determine bar/concrete bond behavior in the anchorage zone. From the other end of the beams, bars were extracted to evaluate their tensile behavior. Crack widths trended upward over time in all environments except freeze/thaw, where little change was seen. Average bond strength at the onset of bar-end slip and at ultimate was approximately constant or slightly increasing with sustained loading duration. The amount of bar-end slip at ultimate was nearly constant in the indoor environment, but decreased with duration in other three environments. Tensile strength decreased in the highly aggressive conditions involving much exposure to water, but not in the indoor or outdoor conditions. The modulus of elasticity did not change appreciably in any of the four conditions.

Original languageEnglish (US)
Title of host publicationAmerican Society for Composites - 23rd Technical Conference of the American Society for Composites 2008
Pages896-904
Number of pages9
StatePublished - Dec 1 2008
Event23rd Technical Conference of the American Society for Composites 2008 - Memphis, TN, United States
Duration: Sep 9 2008Sep 11 2008

Publication series

NameAmerican Society for Composites - 23rd Technical Conference of the American Society for Composites 2008
Volume2

Other

Other23rd Technical Conference of the American Society for Composites 2008
CountryUnited States
CityMemphis, TN
Period9/9/089/11/08

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites

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  • Cite this

    Bakis, C. E. (2008). Review of bond and tensile durability of a GFRP reinforcement bar in concrete. In American Society for Composites - 23rd Technical Conference of the American Society for Composites 2008 (pp. 896-904). (American Society for Composites - 23rd Technical Conference of the American Society for Composites 2008; Vol. 2).