RELAXATION LOSSES IN 7/16 INCH DIAMETER SPECIAL GRADE PRESTRESSING STRANDS

THE PRELIMINARY RESULTS ARE PRESENTED OF EXPERIMENTS CONDUCTED TO INVESTIGATE THE RELAXATION LOSS CHARACTERISTICS OF PRESTRESSING STRANDS. THE FOUR MAIN VARIABLES OF THIS RELAXATION STUDY ARE SIZE AND TYPE OF STRANDS, INITIAL STRESS LEVEL, MANUFACTURER AND TYPE OF LOADING. A DESCRIPTION OF THE TEST SET-UP AND THE TEST PROCEDURE ARE GIVEN. THE DATA OBTAINED DURING THE FIRST 200 DAYS FOR 14 PRESTRESSING STRANDS WITH NOMINAL DIAMETER OF 7/16 IN. ARE PRESENTED. FOR THIS DURATION NO SIGNIFICANT DIFFERENCE WAS FOUND BETWEEN TWO MANUFACTURERS. /AUTHOR/

• Supplemental Notes:
  • Hpr, 66-17
• Corporate Authors:

  Lehigh University

  Bethlehem, PA  United States  18015

  Pennsylvania Department of Highways

  400 North Street
  Harrisburg, PA  United States  17120-0095

  Bureau of Public Roads /US

  400 7th Street, SW
  Washington, DC  United States  20590
• Authors:
  • Schultchen, E G
  • Huang, T
• Publication Date: 1969-7

Subject/Index Terms

• TRT Terms: Loads; Losses; Mechanical relaxation; Prestressing; Size; Stresses; Test procedures
• Uncontrolled Terms: Loading; Prestressing strands
• Old TRIS Terms: Types
• Subject Areas: Geotechnology; Highways; Materials;

Filing Info

• Accession Number: 00215911
• Record Type: Publication
• Source Agency: Bureau of Public Roads /US
• Files: TRIS
• Created Date: Jan 5 1970 12:00AM