BONDED CONCRETE OVERLAYS

LABORATORY TESTS TO EVALUATE THE BOND BETWEEN FRESHLY OVERLAID CONCRETE ON AN EXISTING CONCRETE SURFACE ARE STUDIED. CEMENT GROUT AND EPOXY ARE USED SEPARATELY AS BONDING AGENTS ON TWO PARALLEL SERIES OF TESTS WITH PREPARATION OF EXISTING SURFACE AS A VARIABLE. STATIC AND REPEATED LOADINGS ARE APPLIED ON FRESHLY OVERLAID PRECRACKED CONCRETE BEAMS. THE CONTRIBUTION OF THE BONDED CONCRETE OVERLAY TO THE FLEXURAL RIGIDITY OF THE BEAM AT VARIOUS STAGES OF LOADING ARE DETERMINED. IT IS COMCLUDED THAT CONCRETE OVERLAYS CAN BE MADE TO BOND TO EXISTING CONCRETE SURFACES USING CEMENT GROUT OR EPOXY AS BONDING AGENTS, AND THAT REPEATED LOADINGS WITHIN THE WORKING RANGE WILL NOT CAUSE BOND FAILURE BETWEEN THE TWO CONCRETES. THIN BONDED CONCRETE OVERLAYS ARE FOUND TO INCREASE, CONSIDERABLY, THE FLEXURAL RIGIDITY AND THE ULTIMATE MOMENT CAPACITY OF THE EXISTING CONCRETE SECTION. /AUTHOR/

  • Supplemental Notes:
    • Vol 96, No ST8, PROC PAPER 7450, PP 1627-1638
  • Authors:
    • Sinno, R
    • Furr, H L
  • Publication Date: 1970-8

Media Info

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Filing Info

  • Accession Number: 00213795
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Oct 5 1970 12:00AM