Comparative Study of Mechanical and Corrosion Resistance Properties of Bridge Post-Tensioning Strands

This report summarizes the exploration of new methods of protection for the strands used in post-tensioning of concrete bridges. Companion small-scale tests of strand or grout and strand were conducted. The tests included mechanical testing to determine modulus of elasticity, yield strength, and ultimate strength. In addition a number of passive corrosion exposure tests and accelerated active corrosion tests were run. These accelerated tests included both linear polarization resistance tests and potentiodynamic tests. Strand types investigated included conventional steel strand, hot dip galvanized strand, stainless steel strand, copper-clad strands, stainless-clad strands, and flow-filled epoxy-coated strand. The results indicated that the epoxy-coated strand dominated the others in corrosion resistance and met all mechanical property requirements. The stainless-clad and stainless steel strand were only slightly behind the epoxy-coated in corrosion resistance but need improvement in mechanical properties. The stainless-clad strand met the mechanical requirements for Grade 250 but not Grade 270.

  • Record URL:
  • Supplemental Notes:
    • Project Title: Corrosion Resistance of Grouted Post-Tensioning Systems.
  • Corporate Authors:

    University of Texas, Austin

    Center for Transportation Research, 1616 Guadalupe Street
    Austin, TX  United States  78701-1255

    Texas Department of Transportation

    Research and Technology Implementation Office, P.O. Box 5080
    Austin, TX  United States  78763-5080

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Kalina, R D
    • Lean, S Mac
    • Breen, J E
  • Publication Date: 2011-8-15

Language

  • English

Media Info

  • Media Type: Web
  • Edition: Technical Report
  • Features: Figures; Photos; References; Tables;
  • Pagination: 74p

Subject/Index Terms

Filing Info

  • Accession Number: 01376190
  • Record Type: Publication
  • Report/Paper Numbers: FHWA/TX-11/0-4562-3, Report 0-4562-3
  • Contract Numbers: Project 0-4562
  • Files: TRIS, USDOT, STATEDOT
  • Created Date: Jul 24 2012 8:21AM