MINIMISING THE NUISANCE OF LOOSE CHIPPINGS IN ROAD SURFACE DRESSING- A REVIEW OF IMPROVED MATERIALS AND TECHNIQUES

FOR IMPROVEMENT IN SURFACE DRESSING IT IS RECOMMENDED THAT CHIPPINGS BE TESTED AND SAMPLED BY SIEVE ANALYSIS, TO ENSURE MORE UNIFORMITY IN SIZE. MOISTURE AND DUST ON CHIPPINGS SHOULD BE AVOIDED, SINCE THESE FACTORS RETARD ADHESION WITH THE BINDER. CHIPPINGS COATED WITH TAR ARE CONSIDERED THE MOST IMPORTANT DEVELOPMENT IN THE PROMOTION OF ADHESION. THREE TYPES OF GRITTING APPLIANCE ARE DESCRIBED' TAIL-BOARD GRITTERS ATTACHED TO THE TIPPING LORRY, SELF-PROPELLED FORWARD GRITTING MACHINES WHICH GIVE MORE ACCURATE CONTROL THAN REVERSING LORRY GRITTERS, AND COMBINATION MACHINES INCORPORATING THE THREE PROCESSES OF SPRAYING, GRITTING AND ROLLING. RUBBER-TYRED ROLLERS, WITH FLEXIBLE SUSPENSION, ENSURE THAT CHIPPINGS ARE ROLLED WITHOUT CRUCHING. THE SPEED OF TRAFFIC PASSING OVER THE NEW WORK MUST BE CONTROLLED FOR SUCCESSFUL RETENTION OF CHIPPINGS IN SURFACE DRESSINGS. MECHANICAL SUCTION SWEEPERS ARE MORE EFFICIENT THAN MANUAL SWEEPING IN THE REMOVAL OF EXCESS LOOSE CHIPPINGS. /RRL/

  • Supplemental Notes:
    • Vol19, No1, PP4-6, 1PHOT
  • Authors:
    • Robinson, D A
  • Publication Date: 1965-3

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Filing Info

  • Accession Number: 00214574
  • Record Type: Publication
  • Source Agency: Road Research Laboratory /UK
  • Files: TRIS
  • Created Date: Dec 12 1994 12:00AM