Bond Durability of Glass Fiber-Reinforced Polymer Bars Embedded in Concrete Beams

An experimental and analytical investigation of the bond durability of E-glass fiber-reinforced polymer reinforcing bars in concrete beams is presented. Beams were conditioned with sustained flexural loads in indoor, outdoor, 60°C alkaline solution, or freeze/thaw environments for up to 3 years, after which they were subjected to eccentric 3-point flexure tests to evaluate bond. Experimental bar force and slip were used to draw direct conclusions on bond durability, and also to calibrate a proposed local bond–slip model that incorporates concrete cover splitting. Experimental bar force at the onset of free-end slip varied little after any of the conditionings, although the characteristic of bond failure was noted to be less ductile in the more moist environments. The interfacial fracture energy associated with bond–slip did not change with conditioning time in any of the environments except freeze/thaw, where a monotonic reduction vs. time was seen. The effective bond length of the bar under different conditionings varied roughly in proportion to the local slip at complete local bond failure.

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  • Supplemental Notes:
    • Abstract reprinted with permission from ASCE
  • Authors:
    • Bakis, Charles E
    • Boothby, Thomas E
    • Jia, Junhui
  • Publication Date: 2007-5

Language

  • English

Media Info

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Filing Info

  • Accession Number: 01051354
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jun 10 2007 11:38AM