BOND AND DURABILITY OF CONCRETE AND RESINOUS OVERLAYS

TESTS WERE MADE ON PORTLAND CEMENT AND RESINOUS CONCRETE OVERLAYS TO DETERMINE THEIR SUITABILITY AS OVERLAYS FOR DETERIORATED CONCRETE BRIDGE DECKS. DIRECT SHEAR STRENGTHS OF OVERLAYS BONDED WITH EPOXY, PORTLAND CEMENT GROUT, AND LATEX MODIFIED CEMENT GROUT WERE COMPARED WITH THOSE APPLIED WITH NO BONDING AGENT. FREEZE-THAW TESTS WERE MADE TO DETERMINE DURABILITY OF BONDING AGENTS AND OF OVERLAY CONCRETES. LOAD TESTS WERE MADE ON 8 FT. SPAN BEAMS TO DETERMINE THE STIFFENING EFFECT OF OVERLAYS AND THE EFFECT OF REPEATED LOADINGS ON OVERLAID BEAMS. SHEAR BOND STRENGTHS RANGED FROM 214 PSI TO 668 PSI. EPOXY AND PORTLAND CEMENT GROUT BONDING AGENTS WITHSTOOD THE ASTM C-290 TEST WITHOUT FAILURE. TWO OF THREE OVERLAYS OF LATEX MODIFIED CEMENT CONCRETE CAME UNBONDED DURING THE ASTM C-290 TEST. LATEX MODIFIED CEMENT CONCRETE OVERLAY PROVIDED BETTER FREEZE-THAW SCALE RESISTANCE THAN DID OTHER MATERIALS. NO OVERLAY FAILED IN ANY WAY, EXCEPT FOR TENSION CRACKS, IN 2 MILLION CYCLES OF LOAD. /AUTHOR/

• Supplemental Notes:
  • Res Rept 130-5, 40 PP
• Corporate Authors:

  Texas Transportation Institute

  Texas A&M University System, 1600 E Lamar Boulevard
  Arlington, TX  United States  76011
• Authors:
  • Furr, H L
  • Ingram, L L
• Publication Date: 1971-4

Subject/Index Terms

• TRT Terms: Bonding; Bridge decks; Cement; Concrete; Freeze thaw durability; Overlays (Pavements); Portland cement concrete; Resins; Shear strength
• Uncontrolled Terms: Stiffening
• Old TRIS Terms: Resin cements
• Subject Areas: Highways; Pavements;

Filing Info

• Accession Number: 00207373
• Record Type: Publication
• Files: TRIS
• Created Date: Oct 18 1971 12:00AM