FACTORS INFLUENCING AGGREGATE SKID-RESISTANCE PROPERTIES

AGGREGATES THAT HAD BEEN RATED IN LABORATORY PAVING MIXTURES FOR WEAR AND POLISHING RESISTANCE HAVE BEEN EXAMINED FOR PHYSICAL PROPERTIES SUCH AS SPECIFIC GRAVITY, ABSORPTION, AND SURFACE TEXTURE; FOR LOS ANGELES WEAR; FOR ACID-INSOLUBLE RESIDUE PERCENTAGE AND GRADATION IN THE CASE OF CARBONATE AGGGREGATES; AND PETROGRAPHICALLY FOR MINERAL COMPOSITION, GRAIN SHAPE, GRAIN SIZE AND DISTRIBUTION, AND HARDNESS OF MINERALS. FOR GRANITE AGGREGATES, HIGHER LOS ANGELES WEAR LOSS INDICATED HIGHER SKID RESISTANCE. FOR SYNTHETIC AGGREGATES, HIGH ABSORPTION AND SURFACE CAPACITY SEEMED TO CORRELATE WITH HIGHER SKID RESISTANCE. THE ACID-INSOLUBLE RESIDUE PERCENTAGES FOR THE FOUR CARBONATE AGGREGATES EXAMINED INDICATED THAT SKID RESISTANCE IMPROVED WITH INCREASED RESIDUE AND THAT SAND-SIZE RESIDUE PROBABLY IS MORE IMPORTANT THAN TOTAL RESIDUE. A GENERAL CORRLEATION WAS FOUND BETWEEN THE PETROGRAPHIC PROPERTIES AND THE SKID RESISTANCE OF ANY GIVEN AGGREGATE: SKID RESISTANCE WAS HIGHER FOR AGGREGATES HAVING MIXED COMPOSITION OF HARD AND SOFT MINERALS THAN FOR AGGREGATES CONSISTING PREDOMINANTLY OF MINERALS OF THE SAME TYPE HAVING THE SAME HARDNESS. /AUTHOR/

Media Info

  • Media Type: Print
  • Features: Figures; References; Tables;
  • Pagination: pp 136-148
  • Monograph Title: Anti-Skid Program Management and Related Papers
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00217900
  • Record Type: Publication
  • ISBN: 0309019907
  • Files: TRIS, TRB
  • Created Date: Jun 5 1972 12:00AM