FRP reinforcement for concrete: performance assessment and new construction : volume I: Sierrita De La Cruz Creek bridge.

Details

• Creators:
  Gooranorimi, Omid ; Bradberry, Timothy ; Dauer, Edward ; Myers, John ; Nanni, Antonio
• Corporate Creators:
  Research on Concrete Applications for Sustainable Transportation (RE-CAST) ; University of Miami ; Missouri University of Science and Technology
• Corporate Contributors:
  United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology ; United States. Department of Transportation. University Transportation Centers (UTC) Program
• Subject/TRT Terms:
  • Alkalinity
  • Bridge decks
  • Case studies
  • Corrosion resistance
  • Durability
  • Evaluation and assessment
  • Glass fiber reinforced plastics
  • Reinforced concrete
  • Reinforcing bars
  • Shear strength GFRP
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• Publication/ Report Number:
  RECAST UTC #00042134-04-103A
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States;Texas
• Edition:
  Final report
• Corporate Publisher:
  Research on Concrete Applications for Sustainable Transportation (RE-CAST) (UTC)
• Abstract:
  Glass fiber reinforced polymer (GFRP) composites are emerging as a feasible economical solution to eliminate the ; corrosion problem of steel reinforcements in the concrete industry. Confirmation of GFRP long-term durability is crucial ; to extend its application in aggressive environments. The objective of this study is to investigate the performance of ; GFRP materials exposed to the concrete alkalinity and ambient conditions after 15 years of service in a field application. ; “Sierrita de la Cruz Creek” Bridge (built in 2000, located 25 miles Northwest of Amarillo, Texas) was chosen as a case ; study since it was one of the first bridges that included GFRP as both primary and secondary top mat reinforcements in ; the deck. In order to monitor possible changes in GFRP and concrete after fifteen years of service, samples were extracted ; from different locations on the bridge for various analyses. Carbonation depth and pH of the concrete surrounding the ; GFRP bars were measured. Scanning electron microscopy (SEM) imaging and energy dispersive X-Ray spectroscopy ; (EDS) were performed to monitor any microstructural degradation or change in the GFRP chemical compositions. ; Finally, GFRP interlaminar (horizontal) shear strength, glass transition temperature (Tg) and fiber content were ; determined and compared with the results of similar tests performed on control samples at the time of construction. SEM ; and EDS did not show any sign of GFRP microstructural deterioration or change of chemical composition. Inter-laminar ; shear strength results were inconclusive as the No. 5 showed a slight improvement, while the strength of No. 6 decreased. ; Tg and fiber content were comparable to pristine values. The results of this study represent an additional data point to ; validate the notion that GFRP bar properties are maintained during 15 years of service as concrete reinforcement in a field ; application.
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• Format:
  PDF
• Funding:
  DTRT13-G-UTC45
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/30967/dot_30967_DS1.pdf
• File Type:
  [PDF - 4.21 MB]
• Collection(s):
  University Transportation Centers ; US Transportation Collection
• Main Document Checksum:
  urn:sha-512:7261b2c4e74083dd29d8913a8d5755387901ad72812bd8ba51b07df66777445418a39b6f9c8abbda17e10d36066690a7f334a2a0dd913aecafe8d15dae47d52a