THE WEAR AND SKID-RESISTANCE CHARACTERISTICS OF SELECTED ROAD AGGREGATES

A SERIES OF WEAR TESTS HAS BEEN CONDUCTED ON A NUMBER OF ROAD AGGREGATES USING THE STANDARD ACCELERATED POLISHING MACHINE. BETWEEN WEAR RUNS, THE COEFFICIENT OF FRICTION HAS BEEN MEASURED WITH A PORTABLE SKID-RESISTANCE TESTER, AND THE EXTENT AND TYPE OF WEAR OCCURRING IN THE SAMPLES HAVE BEEN RECORDED WITH A SIMPLE HYDRAULIC TEST DEVICE. THIS DEVICE WAS DESIGNED AND USED TO ACCURATELY PREDICT AND MEASURE CHANGES IN MEAN TEXTURE DEPTH WHICH OCCUR DURING THE WEAR PROCESS. TWO DISTINCT TYPES OF WEAR (EDGE AND CENTER WEAR) HAVE BEEN IDENTIFIED AND SHOWN TO BE DEPENDENT ON THE MAGNITUDE AND SIGN OF CHANGES IN THE MEAN HYDRAULIC RADIUS OF THE SURFACES. IT IS DEMONSTTRATED THAT A PREDICTION OF THE ENTIRE FRICTION VE. VELOCITY CHARACTERISTIC AT EACH STAGE DURING THE LIFE OF A SURFACE MAY BE POSSIBLE. THIS INFORMATION SHOULD BE EXTREMELY USEFUL IN THE FINAL SELECTION OF SUITABLE ROAD AGGREGATES. /AUTHOR/

  • Corporate Authors:

    Phys Plng & Constr Nat Inst /Ire

    ,    
  • Authors:
    • MOORE, D F
  • Publication Date: 1972-3

Media Info

  • Features: Figures; Photos; References; Tables;
  • Pagination: 46 p.
  • Serial:
    • Issue Number: rc88

Subject/Index Terms

Filing Info

  • Accession Number: 00207666
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Report/Paper Numbers: R&d Rept
  • Files: TRIS
  • Created Date: Jul 16 1974 12:00AM