I-10 Girder Repair Using Post-Tensioned Steel Rods and Carbon Fiber Composite Cables (CFCC)

The objective of this research is to continuous monitor the stress changes in all external reinforcement to ensure the safety of the bridge structure. This monitoring effort will provide the department on decision making on the future operation of the bridge. In addition, since both the traditional steel reinforcement and Carbon Fiber Composite Cables (CFCC) will be used, comparisons of the long-term performance of the two materials will be made. Due to the corrosive environment of the subject bridge there is a concern of continuing deterioration of the bridge girders and to be installed reinforcing steel bars and CFCC's. Continuous monitoring for the followings throughout the life time of this bridge is desirable, sudden change in stresses of the external reinforcing bars; gradual change in stresses of the external reinforcing bars and temperature. Any sudden increase in stresses of the internal reinforcement would indicate further deterioration of the prestressed girders either form spall of the concrete or breaking of the prestressed strands. Conversely, any sudden decrease in stresses would indicate failure of the anchorage of the reinforcement rendering the repair ineffective. Gradual change in stresses is most likely to be related to creep or corrosion of the reinforcement. Monitoring the change can provide insight into the behavior of the reinforcement. In order to better isolate the change of stresses due to structural condition changes from environment, temperature will be recorded along with the stresses.

• Record URL:
  http://www.ltrc.lsu.edu/pdf/2013/capsule_13_4ST.pdf
• 

Language

• English

Project

• Status: Active
• Funding: $60000.00
• Contract Numbers:

  13-4ST

  300001020

• Sponsor Organizations:

  Louisiana Department of Transportation

  P.O. Box 94245
  1201 Capitol Access Road
  Baton Rouge, LA  United States  70804-9245

  Louisiana Transportation Research Center

  4101 Gourrier Avenue
  Baton Rouge, LA  United States  70808
• Project Managers:

  Alaywan, Walid

  King, Bill

• Performing Organizations:

  Louisiana Transportation Research Center

  4101 Gourrier Avenue
  Baton Rouge, LA  United States  70808

  Louisiana Department of Transportation

  P.O. Box 94245
  1201 Capitol Access Road
  Baton Rouge, LA  United States  70804-9245
• Principal Investigators:

  Alaywan, Walid

  Tsai, Ching

• Start Date: 20130318
• Expected Completion Date: 0
• Actual Completion Date: 20140317
• Source Data: RiP Project 33932

Subject/Index Terms

• TRT Terms: Cables; Carbon fibers; Corrosion; Creep; Girder bridges; Reinforcement (Engineering); Stresses
• Uncontrolled Terms: Prestressed strands
• Subject Areas: Bridges and other structures; Highways; Maintenance and Preservation; Pavements;

Filing Info

• Accession Number: 01492312
• Record Type: Research project
• Source Agency: Louisiana Transportation Research Center
• Contract Numbers: 13-4ST, 300001020
• Files: RiP
• Created Date: Sep 5 2013 1:00AM