Corrosion Evaluation of Post-Tensioned Tendons Embedded in Concrete Bridges

The Coatings and Corrosion Laboratory at Turner-Fairbank Highway Research Center of Federal Highway Administration launched an in-house corrosion study addressing a very critical durability issue related to post-tensioned concrete bridges. Currently, there are no effective non-destructive corrosion detection techniques to diagnose corrosion activities hidden inside post-tensioned tendons despite growing number of this type of bridge structures. Accelerated corrosion testing is being conducted with five 4-in. diameter and 7-10 ft. long field tendons and two mock-up laboratory specimens. Condition of the deteriorated tendon specimens will be assessed, in terms of section loss and extent of corrosion, by several experimental techniques such as Magnetic Flux Leakage (MFL) and other non destructive evaluation (NDE) methods. Reliable NDE technique(s) with accuracy and reproducibility will be identified in the end of the study.

Language

• English

Project

• Status: Active
• Sponsor Organizations:

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Project Managers:

  Lee, Seung-Kyoung

• Performing Organizations:

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Principal Investigators:

  Lee, Seung-Kyoung

• Start Date: 20080505
• Expected Completion Date: 0
• Actual Completion Date: 20110429
• Source Data: RiP Project 19465

Subject/Index Terms

• TRT Terms: Concrete bridges; Corrosion; Durability; Posttensioning; Research projects; Tendons
• Uncontrolled Terms: Corrosion rate
• Subject Areas: Bridges and other structures; Highways;

Filing Info

• Accession Number: 01459761
• Record Type: Research project
• Source Agency: Federal Highway Administration
• Files: RIP, USDOT
• Created Date: Jan 3 2013 1:12PM