Preservation of Missouri Transportation Infrastructures: Non-Destructive Testing of FRP Materials and Installation, Gold Bridge

The Fiber Reinforced Polymer (FRP) retrofit of a concrete bridge (Gold Bridge, Bridge P-0962 in Dallas County) in Missouri provided the opportunity to use new and existing technologies to test the FRP materials installations and performance. Four different parameters were investigated: concrete substrate surface roughness, FRP fiber alignment, FRP delamination, and FRP bond pull-off strength. Results of testing to date are presented, and long term monitoring plans are given. Surface substrate roughness measurements of sand blasted surfaces were made on selected locations of the bridge abutments and bents, as well as the bridge deck, using a newly developed laser profilometer. The roughness measurements are compared to the “idealized surface roughness” and compared against any potential future delamination from pull-off tests and natural delamination. FRP fiber alignment measurements were made using an imaging technique that measures the angle between control lines and special tracers embedded in the FRP materials. FRP delamination testing was done using a specially modified impact echo tester on production surfaces and on surfaces with artificially created delaminations. All test sites are referenced with respect to previously determined substrate roughness measurements. Tests were performed periodically for five years. FRP bond pull-off strength testing was done using a specially designed pull-off tester. Pull-off plugs were installed on selected locations on the bridge and referenced to roughness measurements; pull-off tests were performed periodically for five years.

• Record URL:
  • http://utc.mst.edu/documents/R96_CR.pdf
• Record URL:
  • https://spexternal.modot.mo.gov/sites/cm/CORDT/or09010.pdf
• 
• Record URL:
  • https://rosap.ntl.bts.gov/view/dot/62107
• Supplemental Notes:
  • This research was sponsored by the U.S. Department of Transportation, University Transportation Centers Program.
• Corporate Authors:

  Missouri University of Science and Technology, Rolla

  Center for Infrastructure Engineering Studies
  Rolla, MO  United States  65409

  Missouri Department of Transportation

  105 West Capitol Avenue
  Jefferson City, MO  United States  65102

  Research and Special Programs Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Maerz, Norbert H
  • Galecki, Greg
• Publication Date: 2008-7

Language

• English

Media Info

• Media Type: Web
• Edition: Final Report
• Features: Appendices; Figures; Photos; References; Tables;
• Pagination: 41p

Subject/Index Terms

• TRT Terms: Bond strength (Materials); Concrete bridges; Delamination; Fiber reinforced plastics; Nondestructive tests; Preservation; Pull out test; Retrofitting; Roughness
• Candidate Terms: Imaging systems; Impact echo tests
• Uncontrolled Terms: Fiber alignment; Laser profilometer; Transportation infrastructure
• Geographic Terms: Missouri
• Subject Areas: Bridges and other structures; Design; Highways; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 01110681
• Record Type: Publication
• Report/Paper Numbers: UTC R96, RG001232
• Contract Numbers: DTRS98-G-0021 (Grant)
• Files: UTC, NTL, TRIS, USDOT, STATEDOT
• Created Date: Sep 19 2008 10:42AM