Tensile strength of GFRP bars under sustained loading in concrete beams

Charles E. Bakis, Thomas E. Boothby, Robert A. Schaut, Carlo G. Pantano

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

13 Scopus citations

Abstract

Glass fiber reinforced polymer (GFRP) bars were placed under load in concrete beams for periods of time as long as three years in natural and harsh environments. Following flexural loading, the bars were carefully extracted from the beams and tested in order to evaluate residual tensile properties. It was found that the tensile strength decreased in the highly aggressive conditions but not in the natural conditions. The modulus of elasticity and ultimate strain did not change appreciably in any of the four conditions. Analysis of selected bars using thermo-mechanical analysis indicated only slight effects of conditioning on glass transition temperature and transverse coefficient of thermal expansion. Energy dispersive x-ray spectroscopy indicated no signs of damage, loss of cross section, or change in material composition of the bars.

Original languageEnglish (US)
Title of host publication7th International Symposium on Fiber-Reinforced Polymer (FRP) Reinforcement for Concrete Structures
EditorsCarol K. Shield, John P. Busel, Stephanie L. Walkup, Doug D. Gremel
PublisherAmerican Concrete Institute
Pages1429-1446
Number of pages18
ISBN (Electronic)9780870311895
StatePublished - Oct 1 2005
Event7th International Symposium on Fiber- Reinforced Polymer Reinforcement for Reinforced Concrete Structures, FRPRCS 2005 - Kansas City, United States
Duration: Nov 6 2005Nov 10 2005

Publication series

NameAmerican Concrete Institute, ACI Special Publication
VolumeSP-230
ISSN (Print)0193-2527

Conference

Conference7th International Symposium on Fiber- Reinforced Polymer Reinforcement for Reinforced Concrete Structures, FRPRCS 2005
Country/TerritoryUnited States
CityKansas City
Period11/6/0511/10/05

All Science Journal Classification (ASJC) codes

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

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