BOND FATIGUE TESTS OF BEAMS SIMULATING PRETENSIONED CONCRETE CROSSTIES

One-hundred and eight tests of rectangular beams simulating pretensioned concrete crossties were performed. Repeated loads were applied to one of four selected locations near the end of each beam. The maximum load was either that required to open a crack of 0.001 in. width or a value of 15 percent greater than the crack opening load. Three strand surface conditions and two methods of prestress release were used to produce test specimens with a wide range of realistic transfer lengths. Conclusions about the effect of load location on the strand transfer length necessary to obtain a bond fatigue life of three million cycles are given. Finally, design recommendations are put forth. /Author/

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/08879672
• Corporate Authors:

  Prestressed Concrete Institute

  20 North Wacker Drive
  Chicago, IL  United States  60606
• Authors:
  • Kaar, P H
  • Hanson, N W
• Publication Date: 1975-9

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 65-80
• Serial:
  • PRECAST/PRESTRESSED CONCRETE INSTITUTE. JOURNAL
  • Volume: 20
  • Issue Number: 5
  • Publisher: Precast/Prestressed Concrete Institute
  • ISSN: 0887-9672

Subject/Index Terms

• TRT Terms: Accelerated tests; Beams; Bonds; Design; Fatigue tests; Pretensioning; Repeated loads
• Old TRIS Terms: Design information
• Subject Areas: Bridges and other structures; Design; Highways;

Filing Info

• Accession Number: 00128469
• Record Type: Publication
• Files: TRIS
• Created Date: Jan 14 1976 12:00AM