COMPARISON OF CONFINEMENT MODELS FOR FIBER-REINFORCED POLYMER-WRAPPED CONCRETE

Fiber-reinforced polymer (FRP) wrapping can be used to retrofit existing reinforced concrete columns and is gaining acceptance as an effective rehabilitation and strengthening technique. This article reviews some of the numerous analytical models that have been used to predict the stress-strain behavior of concrete confined by FRP wraps. The authors use these analytical models in the context of a large database of test results on FRP wrapped columns. Several of the existing models are modified to provide the best fit to the experimental database. The authors conclude that, because of the variability in the test data, it appears impossible to develop simple empirical models with less than 14% mean absolute error for ultimate strength and 35% mean absolute error for ultimate strain. Examination of two current North American guidelines for the design of FRP-confined concrete demonstrated that both the ISIS Canada guidelines and CSA S806 code are conservative with at least 99% confidence (when reduction factors are used).

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/13846957
• Supplemental Notes:
  • For this issue of the ACI Structural Journal, the date is January/February 2005.
• Corporate Authors:

  American Concrete Institute (ACI)

  38800 Country Club Drive
  Farmington Hills, MI  United States  48331
• Authors:
  • Bisby, L A
  • Dent, AJS
  • Green, M F
• Publication Date: 2005-1

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 62-72
• Serial:
  • ACI Structural Journal
  • Volume: 102
  • Issue Number: 1
  • Publisher: American Concrete Institute (ACI)
  • ISSN: 0889-3241
  • Serial URL: http://www.concrete.org/PUBS/JOURNALS/SJHOME.ASP

Subject/Index Terms

• TRT Terms: Compressive strength; Deformation curve; Fiber reinforced plastics; Fiber reinforced polymers; Jacketing (Strengthening); Mathematical models; Polymer concrete; Rehabilitation; Reinforced concrete; Structural deterioration and defects
• Subject Areas: Bridges and other structures; Highways; Materials; I32: Concrete;

Filing Info

• Accession Number: 00985149
• Record Type: Publication
• Files: TRIS
• Created Date: Jan 31 2005 12:00AM