A DEVICE FOR MEASURING THE RATE OF SPREAD OF COATED CHIPPINGS ON ROLLED ASPHALT

THE DEVICE CONSISTS OF A SHEET-ALUMINUM TRAY, ABOUT 1/2 IN DEEP AND ONE SQUARE FOOT IN AREA, WHICH IS SECURED BY FOUR 6-IN LENGTHS OF CHAIN TO A METAL DISC HOOKED ONTO A SPECIALLY CALIBRATED SPRING BALANCE. DEVELOPMENT WAS CARRIED OUT AT THE ROAD RESEARCH LABORATORY. THE PROCEDURE CONSISTS OF LAYING THE TRAY ON THE ASPHALT IN FRONT OF THE CHIPPING SPREADER AND, WHEN THE MACHINE HAS PASSED OVER IT, THE TRAY WITH ITS QUOTA OF CHIPPINGS IS HOOKED ONTO AND LIFTED BY THE SPRING BALANCE. THIS HAS A SPECIALLY CALIBRATED SCALE FROM WHICH THE RATE OF SPREAD CAN BE READ OFF DIRECTLY IN SQUARE YARDS PER TON. THE CHIPPINGS ON THE TRAY CAN BE IMMEDIATELY RETURNED TO THE VACANT AREA ON THE ROAD BEFORE THE ROLLER TRAVERSES THAT AREA. /RRL/

  • Supplemental Notes:
    • Vol 125, No 3808, 25PP, 1PHOT
  • Authors:
    • Russell, W L
  • Publication Date: 1965-5

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Filing Info

  • Accession Number: 00210517
  • Record Type: Publication
  • Source Agency: Road Research Laboratory /UK
  • Files: TRIS
  • Created Date: Dec 12 1994 12:00AM