USE OF EPOXY OR POLYESTER RESIN CONCRETE IN TENSILE ZONE OF COMPOSITE CONCRETE BEAMS

THE RESULTS ARE PRESENTED OF AN INVESTIGATION INTO THE FEASIBILITY OF COMBINING THE HIGH COMPRESSIVE STRENGTH OF PORTLAND CEMENT CONCRETE AND THE SUPERIOR TENSILE STRENGTH OF EPOXY OR POLYESTER RESIN CONCRETE INTO A COMPOSITE BEAM. THE DEVELOPMENT IS DESCRIBED OF HIGH-STRENGTH RESIN CONCRETE MIXTURES AND THE MOST IMPORTANT ENGINEERING PROPERTIES OF THE SELECTED MIXTURES ARE SUMMARIZED. ALSO INCLUDED ARE THE RESULTS OF THIRD-POINT LOADING TESTS OF 12 REINFORCED AND UNREINFORCED COMPOSITE BEAMS WITH 1-1/2- AND 3-IN. THICK LAYERS OF EPOXY AND POLYESTER RESIN CONCRETES. THE STUDY LED TO THE FOLLOWING CONCLUSIONS: (1) PROPERLY DESIGNED RESIN CONCRETE LAYERS AT THE TENSION FACE OF CONCRETE BEAMS CAN BE USED TO MODERATELY INCREASE THE STRENGTH AND RIGIDITY OF REINFORCED CONCRETE BEAMS, OR TO UPGRADE THE FLEXURAL STRENGTH OF UNREINFORCED BEAMS BY A FACTOR OF TWO TO THREE, (2) RESIN CONCRETE LAYERS PROVIDE A NONCRACKING MOISTURE BARRIER OR CORROSION PROTECTION PRACTICALLY UP TO BEAM FAILURE, (3) THE EPOXY RESINS APPEARED TO BE MORE SUITABLE FOR THIS APPLICATION THAN THE POLYESTER RESINS INVESTIGATED, AND IN (4) PROPORTIONING RESIN CONCRETE MIXTURES, EARLY ATTENTION SHOULD BE DIRECTED TO PROPERTIES OTHER THAN STRENGTH (SUCH AS SHRINKAGE, CREEP, SENSITIVITY TO ENVIRONMENTAL FACTORS, ETC.). /AUTHOR/

  • Supplemental Notes:
    • No C-69-4, 84 PP
  • Authors:
    • Geymayer, H G
  • Publication Date: 1969-3

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  • Accession Number: 00208998
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jul 14 1994 12:00AM