Determining the Transfer Length in Prestressed Concrete Railroad Ties Produced in the United States

This paper presents results from transfer length measurements on prestressed concrete railroad ties. Results are shown from the four main producers of concrete ties in the United States. Six prestressed concrete tie plants were visited by the research team to measure transfer length on ties with various mix designs and prestressing reinforcement. After all plants had been visited, a total of nine concrete mix designs and 10 reinforcement variations were tested. Overall, 220 transfer length measurements were conducted on prestressed concrete railroad ties during the duration of this research project. This was the first coordinated effort to measure transfer lengths in concrete railroad ties ever conducted in the industry. Concrete strains were monitored using the standard Whittemore gage, as well as a non-contact procedure called laser-speckle imaging (LSI). This method to measure transfer lengths was developed at Kansas State University (KSU). Ties measured using the Whittemore gage were sent back to the civil engineering structural laboratory at KSU for the long-term measurement of transfer lengths.

  • Supplemental Notes:
    • This research was sponsored by the U.S. Department of Transportation, University Transportation Centers Program.
  • Corporate Authors:

    Kansas State University, Manhattan

    Department of Civil Engineering, Fiedler Hall
    Manhattan, KS  United States  66506

    Mid-America Transportation Center

    University of Nebraska-Lincoln
    2200 Vine Street, PO Box 830851
    Lincoln, NE  United States  68583-0851

    Research and Innovative Technology Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Murphy, Rob
    • Zhao, Weixin
    • Peterman, Robert
    • Beck, B Terry
  • Publication Date: 2012-5

Language

  • English

Media Info

  • Media Type: Digital/other
  • Edition: Final Report
  • Features: Appendices; Figures; Photos; References; Tables;
  • Pagination: 273p

Subject/Index Terms

Filing Info

  • Accession Number: 01486738
  • Record Type: Publication
  • Report/Paper Numbers: MATC-KSU: 453, 25-1121-0001-453
  • Files: UTC, TRIS, RITA, ATRI, USDOT
  • Created Date: Jul 10 2013 12:09PM