SPRAY GRIP ANTI-SKID SURFACING MATERIALS

THE USE OF SPRAY GRIP ANTI-SKID SURFACING MATERIALS IS A NEW FORM OF SURFACE TREATMENT THAT HAS PROVED EXTREMELY SUCCESSFUL ON ACCIDENT-PRONE SPOT LOCATIONS, SUCH AS INTERSECTIONS, WHERE THERE HAS BEEN A HIGH FREQUENCY OF WET-ROAD SKIDDING ACCIDENTS. IN LONDON, WHERE 41 SITES WERE TREATED, REAR-END COLLISIONS WERE REDUCED BY 73 PERCENT DURING A 2-YEAR PERIOD. THE KEY FACTORS CONTRIBUTING TO THE PERFORMANCE OF SPRAY GRIP MATERIALS ARE BINDER, AGGREGATE, AND APPLICATION PROCESS. THE BINDER IS A BITUMEN OR ASPHALT EXTENDED EPOXY THAT PROVIDES THE ADHESIVE QUALITIES NECESSARY TO HOLD THE AGGREGATE IN PLACE ON THE ROAD AND IN THE SAME ATTITUDE; THAT IS, IT PREVENTS THE PARTICLES FROM ROTATING AND OFFERING A SMOOTH FACE TO THE TIRE. A NECESSARY FEATURE IS THE PERCENTAGE OF ELONGATION THAT THE MATERIAL CAN OFFER. THE ELONGATION FACTOR ALLOWS THE NECESSARY FLEXIBILITY IN THE AGGREGATE PARTICLE, WHICH AIDS DURABILITY AND ELIMINATES SHOCK REMOVAL. THE AGGREGATE IS RASC GRADE CALCINED BAUXITE MINED IN BRITISH GUIANA, CALCINED AT 1,600 C. IF THE SITES ARE CAREFULLY SELECTED AND THE AREA TO BE TREATED IS KEPT TO THE EFFECTIVE MINIMUM (I.E., 200 FT UP TO THE STOP LINE ON APPROACHES TO INTERSECTIONS WITH A 30-MPH SPEED LIMIT SHOULD RECEIVE A SURFACE DRESSING), THE REDUCTION IN ACCIDENTS WILL MORE THAN JUSTIFY THE COST OF SPRAY GRIP MATERIALS.

Media Info

  • Media Type: Print
  • Pagination: pp 61-62
  • Monograph Title: Anti-Skid Program Management and Related Papers
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00218953
  • Record Type: Publication
  • ISBN: 0309019907
  • Files: TRIS, TRB
  • Created Date: Jun 5 1972 12:00AM