POLYESTER OVERLAYS FOR ROAD AND BRIDGE PROTECTION AND REPAIRS

SEALING OF DETERIORATED CONCRETE SURFACES AND THE PROVISION OF A NEW, DURABLE WEAR SURFACE CANNOT READILY BE ACCOMPLISHED THROUGH THE USE OF CONVENTIONAL PAVING MATERIALS, SUCH AS CONCRETE OR ASPHALTIC-CONCRETE. VARIOUS SYNTHETIC RESIN SYSTEMS HAVE BEEN EVALUATED AS SEALERS AND AS BINDERS FOR WEAR COURSES IN ATTEMPTING TO RESOLVE THE PROBLEM. EPOXY RESIN SYSTEMS HAVE BEEN WIDELY INVESTIGATED AND HAVE THE LONGEST HISTORY OF SATISFACTORY USE. THIS PAPER DESCRIBES THE PERFORMANCE OF A SYSTEM BASED ON POLYESTER RESINS, OVER A WIDE VARIETY OF EXPOSURES AND USE CONDITIONS. THE POLYESTER SYSTEM IS BASICALLY QUITE SIMPLE AND VERSATILE, INVOLVING APPLICATION OF A CATALYZED RESIN TO A CLEAN, DRY, SAND-BLASTED ROAD SURFACE AT A RATE OF 3 LB/SQ YD. CLEAN, DRY ROUND-GRAIN SILICA IS BROADCAST IN EXCESS ONTO THE WET RESIN. AFTER THE RESIN HAS CURED IN 30 TO 60 MIN. THE EXCESS SAND IS BRUSHED OFF. THREE SUCH COATS ARE GENERALLY RECOMMENDED, GIVING A FINAL THICKNESS OF AT LEAST 1/4 IN. THE SYSTEM CURES RAPIDLY OVER A VARIETY OF TEMPERATURE CONDITIONS, 40 TO 110 F, SO THAT TRAFFIC CAN BE ALLOWED OVER THE SURFACE WITHIN AN HOUR AFTER APPLICATION. /AUTHOR/

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/hrr/1968/242/242-004.pdf
• Supplemental Notes:
  • Paper sponsored by Committee on Adhesives, Bonding Agents and Their Uses and presented at the 47th Annual Meeting. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.
• Authors:
  • Estrada, Neil S
• Publication Date: 1968

Media Info

• Media Type: Digital/other
• Features: References; Tables;
• Pagination: pp 36-40
• Monograph Title: Paints, metals, joints and polyester overlays
• Serial:
  • Highway Research Record
  • Issue Number: 242
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Binders; Bridge decks; Concrete; Concrete curing; Deterioration; Overlays (Pavements); Polyester resins; Sealing compounds; Silica; Surface course (Pavements); Synthetic resins; Traffic delays; Wearing course (Pavements)
• Uncontrolled Terms: Deteriorated concrete
• Subject Areas: Bridges and other structures; Geotechnology; Highways; Maintenance and Preservation; Materials;

Filing Info

• Accession Number: 00218422
• Record Type: Publication
• Files: TRIS, TRB
• Created Date: Dec 9 1994 12:00AM