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INVESTIGATION OF FIBERGLASS PRESTRESSED CONCRETE

THIS PROJECT IS CONCERNED WITH THE THEORETICAL AND EXPERIMENTAL INVESTIGATION OF THE ULTIMATE FLEXURAL STRENGTH OF RECTANGULAR CONCRETE BEAMS, POST-TENSIONED WITH UNBONDED FIBERGLASS TENDONS. ALSO, A BRIEF DESCRIPTION IS GIVEN OF THE ANCHORAGE SYSTEM AND THE PROBLEMS RELATED TO GRIPPING THE FIBERGLASS TENDONS. A THEORETICAL SOLUTION FOR THE ULTIMATE LOAD FOR POST-TENSIONED CONCRETE BEAMS WITH STRAIGHT TENDONS IS PRESENTED, AND IT INCLUDES TERMS THAT DESCRIBE THE BEHAVIOR OF THE BEAM FROM THE POST-TENSIONED NO LOAD CONDITION TO FAILURE. SAMPLE DATA FOR ONE OF THE SIX EXPERIMENTAL BEAMS USED IN THE STUDY ARE PRESENTED AND A COMPARISON MADE BETWEEN THE EXPERIMENTAL AND THEORETICAL RESULTS. EXAMPLE SOLUTIONS ARE INCLUDED TO ILLUSTRATE THE USE OF THE EQUATIONS. THE CONCLUSIONS DRAWN FROM THE COMPARISON OF EXPERIMENTAL DATA AND ANALYTICAL VALUES INDICATE THAT THE ULTIMATE FLEXURAL STRENGTH CAN BE EVALUATED BY THE USE OF THE EQUATIONS DEVELOPED IN THE STUDY. FOUR OF THE SIX BEAMS TESTED WERE WITHIN THREE PERCENT OF THE ULTIMATE MOMENT PREDICTED BY THE ANALYTICAL SOLUTIONS. THE END GRIPS THAT WERE STUDIED WOULD PROBABLY BE UNSATISFACTORY FOR LONG TERM LOADING, AND UNTIL A MORE EFFICIENT ANCHORAGE SYSTEM IS DEVELOPED THE USE OF FIBERGLASS POST-TENSIONING TENDONS IS IMPRACTICAL. /AUTHOR/

  • Supplemental Notes:
    • Hpr-1/3/ PaRT II, 0386, STATE NO 3-14
  • Corporate Authors:

    Virginia Highway Research Council

    Charlottesville, VA  United States 

    Virginia Department of Highways

    Richmond, VA  United States  23219
  • Authors:
    • Gloeckner, K M
    • Hilton, M H
  • Publication Date: 1967-6

Subject/Index Terms

Filing Info

  • Accession Number: 00207847
  • Record Type: Publication
  • Source Agency: Bureau of Public Roads /US
  • Files: TRIS, STATEDOT
  • Created Date: Dec 15 1994 12:00AM