NOVEL HIGHWAY COATING MAY OPEN NEW ROADS FOR REINFORCED PLASTICS

REINFORCED PLASTIC IS BEING USED IN A 0.1 IN. THICK LAYER TO PROTECT THE CONCRETE WALLS AND MEDIAN DIVIDER OF A 10-MI. STRETCH OF ELEVATED HIGHWAY NEAR LONDON. THE COATING IS SPRAYED DIRECTLY ONTO THE CONCRETE SURFACES WITHOUT THE USE OF A PRIMER OR OTHER INTERMEDIATE LAYER. NO SPECIAL GRADE OF CONCRETE IS REQUIRED. THE MATERIAL USED IS SCOTT BADER & CO. LTD.'S CERCOTE POLYESTER RESIN, 33% REINFORCED WITH SILENKA U. K.'S SPRAY-ON ROVING 523 1 1/2-IN. GLASS FIBERS. A THIXOTROPIC MEDIUM ADDED TO THE RESIN FACILITATES SPRAYING AGAINST THE VERTICAL WALLS. THE CATALYST ACCELERATION SYSTEM IS SPECIALLY FORMULATED TO PERMIT SPRAYING IN A DAMP ATMOSPHERE AT TEMPERATURES AROUND 5 C. THE WATER-TIGHT COATING IS APPLIED AT A RATE OF ABOUT 27 SQ. FT. PER MAN-HOUR AND REPORTEDLY PROTECTS THE REINFORCING STEEL FROM CORROSION WHILE IT PROTECTS THE CONCRETE FROM MECHANICAL DAMAGE. BECAUSE OF THE COATING, VIBRATIONS FROM HEAVY TRAFFIC ARE SAID TO NO LONGER CAUSE THE CONCRETE TO CRACK. THE CREAM-COLORED SURFACE OF THE COATING IS ALSO MORE EASILY CLEANED AND MORE ESTHETICALLY PLEASING THAN THE BARE CONCRETE. /MP/

  • Supplemental Notes:
    • Vol 4m, No 12, P 100
  • Publication Date: 1970-12

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00214067
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Mar 20 1972 12:00AM