DEVELOPMENT OF EPOXY MATERIALS FOR HIGHWAY USE

THE PURPOSE OF THIS PROJECT WAS TO DEVELOP AN EPOXY ADHESIVE SPECIFICALLY FOR HIGHWAY USE. THE ADHESIVE WAS TO BE DESIGNED MAINLY FOR THE FOLLOWING USES' 1/BONDING PLASTIC PORTLAND CEMENT CONCRETE TO EXISTING CONCRETE STRUCTURES, 2/ BONDING CURED CONCRETE TO EXISTING CONCRETE STRUCTURES, 3/ BONDING STEEL TO HARDENED OR PLASTIC CONCRETE, AND 4/ BONDING STEEL TO STEEL WHERE HIGH STRUCTURAL STRENGTHS ARE NOT REQUIRED. AS A RESULT OF THE ORIGINAL INVESTIGATIONAL WORK ON EPOXIES, AN EPOXY- POLYSULFIDE ADHESIVE WAS DEVELOPED. APPROXIMATELY 3000 GALLONS OF THIS MATERIAL HAVE BEEN PURCHASED TO DATE AT AN AVERAGE COST OF ABOUT NINE DOLLARS PER GALLON, INCLUDING INSPECTION AND TESTING EXPENSES. INDICATIONS ARE THAT THIS MATERIAL IS PERFORMING SATISFACTORILY IN THE FIELD. THE FOLLOWING CONCLUSIONS CONCERNING AN EPOXY ADHESIVE FORMULATION SPECIFICALLY FOR HIGHWAY USE WERE REACHED' 1/ THE BEST TYPE OF EPOXY RESIN AMONG THESE TESTED IS A LOW VISCOSITY UNMODIFIED TYPE, 2/THERE IS NO SIGNIFICANT DIFFERENCE BETWEEN THE EQUIVALENT RESINS PRODUCED BY DIFFERENT MANUFACTURERS, 3/ OF THE CURING AGENTS TESTED, A MODIFIED AMINE OR MODIFIED AMINE-POLYAMIDE COMBINATION WAS FOUND TO BE THE BEST, 4/ WITH REGARD TO THE FILLERS TESTED, MINUS 325 MESH TABULAR ALUMINA PERFORMED BEST FOLLOWED BY MINUS 325 MESH SILICA FLOUR. CONSIDERING THE COMPARATIVE COST OF THESE TWO MATERIALS, SILICA FLOUR IS THE BETTER ALL AROUND FILLER, 5/ THE BEST THIXOTROPIC AGENT AMONG THOSE TESTED, CONSIDERING BOTH PERFORMANCE AND EASE OF INCORPORATION INTO THE FORMULATION, IS M-5 CAB-O-SIL /COLLOIDAL SILICA/ AND, 6/ THE USE OF SOLVENTS IS NOT RECOMMENDED BECAUSE IN MANY CASES, THEY DETRACT FROM THE PHYSICAL PROPERTIES OF THE ADHESIVE. /AUTHOR/

• Supplemental Notes:
  • UNP.
• Corporate Authors:

  Texas State Department of Highways & Public Transp

  Materials and Tests Division, P.O. Box 5051
  Austin, TX  United States  78763
• Authors:
  • Oconnor, D L
• Publication Date: 1965-10

Subject/Index Terms

• TRT Terms: Adhesives; Amines; Bonds; Concrete curing; Concrete structures; Curing agents; Development; Epoxides; Field studies; Polymer concrete; Portland cement concrete; Steel; Thixotropy; Viscosity
• Old TRIS Terms: Epoxy
• Subject Areas: Geotechnology; Highways; Materials;

Filing Info

• Accession Number: 00216093
• Record Type: Publication
• Report/Paper Numbers: No Ip-2-65-c
• Files: TRIS, STATEDOT
• Created Date: Jun 5 1994 12:00AM