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Microstructure and Mechanical Property Behavior of FRP Reinforcement Autopsied from Bridge Structures Subjected to In Situ Exposure

  • Wei Wang
  • Omid Gooranorimi
  • John J. Myers
  • Antonio Nanni
Conference paper

Abstract

This paper examines the microstructure and mechanical property behavior of FRP reinforcement extracted from several FRP-reinforced concrete bridges built more than a decade ago. These include bridges constructed in Missouri and Texas. In particular, the following tests were performed including SEM, FTIR, EDX, glass transition temperature (Tg), and short shear test (SBS). Results from the evaluation demonstrated that the FRP bars are performing at a level with no observed degradation. The paper collects data to study the implications of the current ACI code knockdown factors relative to field-related data.

References

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    Mufti, A. (2005). Durability of GFRP reinforced concrete in field structures. Proceeding of 7th international symposium on fibre reinforced polymer for reinforced concrete structures-FRPRCS-7 (pp. 889–895).Google Scholar
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    Uomoto, T. (1996). Durability of FRP as reinforcement for concrete structures. Composite Materials Building Structures 3rd International Conference (pp. 423–437).Google Scholar
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    Gooranorimi, O., Dauer, E., Myers, J. J., & Nanni, A. (2016). Long-term durability of GFRP reinforcement in concrete: A case study after 15 years of service. Interim report, University of Miami.Google Scholar
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    ASTM E1640-13. (2013). Standard test method for assignment of the glass transition temperature by dynamic mechanical analysis. American Society for Testing and Materials.Google Scholar

Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  • Wei Wang
    • 1
  • Omid Gooranorimi
    • 2
  • John J. Myers
    • 1
  • Antonio Nanni
    • 2
  1. 1.Department of Civil, Architectural, and Environmental EngineeringMissouri University of Science and TechnologyRollaUSA
  2. 2.Department of Civil, Architectural, and Environmental EngineeringUniversity of MiamiCoral GablesUSA

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