BOND FATIGUE TEST 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/
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Corporate Authors:
5420 Old Orchard Road
Skokie, IL United States 60077 -
Authors:
- Kaar, P H
- Hanson, N W
- Publication Date: 1975
Media Info
- Features: Figures; Photos; References; Tables;
- Pagination: 11 p.
Subject/Index Terms
- TRT Terms: Beams; Bonds; Concrete; Fatigue (Mechanics); Fatigue tests; Loads; Pretensioning; Simulation
- Uncontrolled Terms: Fatigue life
- Subject Areas: Highways; Railroads; Research;
Filing Info
- Accession Number: 00144310
- Record Type: Publication
- Files: TRIS
- Created Date: Mar 30 1977 12:00AM