MEASURING APPLICATION RATE OF BITUMINOUS MATERIALS

WITH THE AIM OF CONSISTENTLY GOOD RESULTS, ENGINEERS HAVE SOUGHT TO DESIGN APPLICATION RATES FOR BOTH BITUMINOUS MATERIAL AND COVER AGGREGATE. A PROPER COVER OF AGGREGATE CAN BE JUDGED VISUALLY, BUT SOMETHING MORE THAN A VISUAL CHECK IS NEEDED TO BE SURE THAT BITUMINOUS MATERIAL IS APPLIED IN THE AMOUNT NEEDED. A RATHER SIMPLE METHOD IS DESCRIBED FOR MEASURING THE APPLICATION RATE OF BITUMINOUS MATERIAL. THE METHOD EVOLVED FROM NOTIONS THAT A DEVICE SHOULD BE HEAVY ENOUGH NOT TO BE DISPLACED BY THE SPRAY AND REQUIRE LITTLE OR NO CLEANUP. THE DEVICE CONSISTS OF A STEEL RING AND DISPOSABLE POLYETHYLENE LINER. AFTER THE OPEN END OF THE LINER BAG IS TUCKED INTO THE RING, THE DEVICE IS INVERTED AND READY TO USE. THE EFFECTIVE AREA OF ASSEMBLY IS DEFINED BY THE OUTSIDE DIAMETER OF THE RING. PREPARED DEVICES ARE PLACED ON ROAD SURFACE IN THE PATH OF THE DISTRIBUTOR. AS BITUMINOUS MATERIAL IS SPRAYED, RINGS HOLD MEASURABLE QUANTITIES. MATERIAL WEIGHT IS BEST TAKEN IN GRAMS AND CONVERSION TO GALLONS PER SQUARE YARD CAN BE MADE IMMEDIATELY. FIELD TESTS HAVE BEEN MADE TO GIVE SOME INDICATION OF THE ERROR WHICH MAY BE EXPECTED USING THE METHOD. /AUTHOR/

  • Availability:
  • Supplemental Notes:
    • Vol 100, No 6, PP 92-93
  • Authors:
    • Spencer, J W
    • Ditmars, C D
  • Publication Date: 1969-6

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  • Accession Number: 00211428
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Nov 24 1994 12:00AM