STATE OF THE ART REPORT ON PRESTRESS LOSSES IN POST-TENSIONED MEMBERS

This report presents a survey of the literature concerning the prestress loss characteristics of post-tensioned concrete structural members. Findings by previous researchers related to time-dependent loss components (such as creep and shrinkage of concrete and relaxation in steel), the effect of temperature, and additional losses due to post-tensioning (namely friction and anchorage take-up) are presented and discussed. Specification and code provisions currently in use are reviewed, and the inadequate nature of such provisions is cited. The need for further research is indicated in the area of prestress losses in post-tensioned concrete structural members.

• Supplemental Notes:
  • Prepared in cooperation with Pennsylvania Dept. of Transportation, Harrisburg.
• Corporate Authors:

  Lehigh University

  Fritz Engineering Laboratory
  Bethlehem, PA  United States  18015

  Pennsylvania Department of Transportation

  Commonwealth and Forster Streets
  Harrisburg, PA  United States  17120

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Rimbos, P
  • Huang, T
• Publication Date: 1975-7

Media Info

• Pagination: 66 p.

Subject/Index Terms

• TRT Terms: Bridges; Concrete construction; Concrete structures; Creep properties; Deflection; Friction factor; Mechanical relaxation; Posttensioning; Prestressed concrete; Prestressing; Reinforcing steel; Structural members; Temperature
• Uncontrolled Terms: Prestress loss
• Subject Areas: Bridges and other structures; Highways;

Filing Info

• Accession Number: 00143043
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: FEL-402.1 Intrm Rpt., FHWA/PA-74-3-1
• Files: NTIS, TRIS, USDOT, STATEDOT
• Created Date: Oct 6 1976 12:00AM