EFFECT OF AGGREGATE ON THE SKIDDING RESISTANCE OF BITUMINOUS SURFACINGS: FACTORS OTHER THAN RESISTANCE TO POLISHING

THE MORE IMPORTANT FINDINGS OF THIS STUDY WERE THAT ON THE AVERAGE, QUARTZITES AND BLAST-FURANCE SLAGS GIVE A RESISTANCE TO SKIDDING EQUIVALENT TO THAT GIVEN BY OTHER ROADSTONES WHICH ARE THREE UNITS HIGHER IN POLISH-STONE VALUE. PROVIDED THAT ADEQUATE ROAD SURFACE TEXTURE IS MAINTAINED, REDUCING THE NOMINAL MAXIMUM SIZE OF AN AGGREGATE RAISES THE RESISTANCE TO SKIDDING OF A SURFACING MADE WITH IT. THERE IS SOME INDICATION THAT THE USE OF MORE NEARLY SINGLE-SIZED CHIPPINGS IN SURFACE DRESSINGS GIVES A BETTER SURFACE TEXTURE. INADEQUATE DURABILITY IN AN AGGREGATE CAN AFFECT THE RESISTANCE TO SKIDDING OF A ROAD MADE WITH IT. MIXTURES OF TWO OR MORE ROADSTONES IN A ROAD SURFACING YIELDS A RESISTANCE TO SKIDDING AND A DEPTH OF SURFACE TEXTURE THAT ARE APPROXIMATELY EQUAL TO THE MEANS OF THOSE GIVEN BY THE CONSTITUENTS ON THEIR OWN.

  • Supplemental Notes:
    • TRRL REPT LR 553
  • Corporate Authors:

    Transport and Road Research Laboratory (TRRL)

    Wokingham, Berkshire  United Kingdom 
  • Authors:
    • Hosking, J R
  • Publication Date: 1973-8-6

Media Info

  • Pagination: 28 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00211850
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Oct 16 1973 12:00AM