Design Guidelines for Durability of Bonded CFRP Repair/Strengthening of Concrete Beams

Concrete beams can be repaired and strengthened with externally bonded carbon fiber reinforced polymer (CFRP) composite sheets or prefabricated CFRP laminates. The short-term behavior of these applications has been studied, and construction specifications for bonded repair were developed under NCHRP Project 10-59A. Nevertheless, research into their long-term performance is incomplete, and durability issues remain unanswered. Proper use of CFRP systems requires knowledge of their durability. The effect of mechanical and environmental loading on bonded CFRP systems may be significant. The development of design guidelines and material selection criteria that consider the effects of mechanical and environmental loads on durability will permit designers to repair or strengthen structures more effectively. The research may identify dominant factors that need to be monitored to evaluate the condition of CFRP applications. The results of this study may also be applicable to evaluation of the durability of existing installations. The objective of this project is to develop design guidelines and material selection criteria that consider the effects of mechanical and environmental loads on the durability of bonded CFRP repair and strengthening of concrete beams.

• Record URL:
  http://www.trb.org/TRBNet/ProjectDisplay.asp?ProjectID=362

Language

• English

Project

• Status: Completed
• Funding: $500000.00
• Contract Numbers:

  Project 12-73

• Sponsor Organizations:

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590

  American Association of State Highway and Transportation Officials (AASHTO)

  444 North Capitol Street, NW
  Washington, DC  United States  20001

  National Cooperative Highway Research Program

  Transportation Research Board
  500 Fifth Street, NW
  Washington, DC  United States  20001
• Project Managers:

  Hanna, Amir

• Performing Organizations:

  University of Wyoming, Laramie

  1000 E University Avenue, Department 3295
  Laramie, WY  United States  82071
• Principal Investigators:

  Dolan, Charles

• Start Date: 20050307
• Expected Completion Date: 0
• Actual Completion Date: 20080831
• Source Data: RiP Project 10568

Subject/Index Terms

• TRT Terms: Beams; Carbon fibers; Durability; Polymers; Reinforced concrete; Research projects; Strengthening (Maintenance)
• Identifier Terms: National Cooperative Highway Research Program
• Subject Areas: Bridges and other structures; Highways; Maintenance and Preservation; Research; I30: Materials;

Filing Info

• Accession Number: 01463076
• Record Type: Research project
• Source Agency: National Cooperative Highway Research Program
• Contract Numbers: Project 12-73
• Files: RIP, USDOT
• Created Date: Jan 3 2013 2:16PM