USE OF FOAMED PLASTIC IN HIGHWAY CONSTRUCTION

IN 1962 A TRIAL INSTALLATION INCORPORATING FOAMED PLASTIC IMMEDIATELY BELOW THE GRAVEL BASE-COURSE IN A BITUMINOUS- SURFACED ROAD WAS MADE NEAR WINNIPEG. THE SUBGRADE SOIL WAS A TYPICAL RED RIVER GUMBO CLAY AND WAS COVERED WITH A THIN LAYER OF CLEAN SAND TO HELP LEVEL THE FOAMED PLASTIC, WHICH WAS A CONTINUOUSLY EXTRUDED POLYSTYRENE, SUPPLIED IN 4-FT BY 8-FT SHEETS. RESULTS ON PERFORMANCE AND FROST PENETRATION ARE GIVEN. IN 1964 A FURTHER EXPERIMENT WAS CARRIED OUT USING 2-IN THICK FOAMED PLASTIC 12 IN BELOW THE BOTTOM OF A DUAL MULTIPLATE CULVERT AND EXTENDING 2 FT BEYOND THE PIPES ON EITHER SIDE, WHERE 3-FT SECTIONS OF STYROFOAM WERE PLACED VERTICALLY SO THAT THE CULVERT RESTED IN A FOAMED PLASTIC CRADLE. IT IS INTENDED TO CARRY OUT FURTHER EXPERIMENTS USING DIFFERENT THICKNESSES OF GRAVEL BASE IN ORDER TO DETERMINE STRUCTURAL CHARACTERISTICS. /RRL/

  • Availability:
  • Supplemental Notes:
    • Vol96, No7, PP76-78, 4FIG, 2PHOT
  • Authors:
    • Young, F D
  • Publication Date: 1965-7

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  • Accession Number: 00214593
  • Record Type: Publication
  • Source Agency: Road Research Laboratory /UK
  • Files: TRIS
  • Created Date: Feb 26 1994 12:00AM