MINERAL WEAR IN RELATION TO PAVEMENT SLIPPERINESS

THE JOINT ROAD FRICTION PROGRAM HAS BEEN CONCERNED, EVER SINCE ITS INCEPTION, NOT ONLY WITH THE IDENTIFICATION AND THE MECHANISM OF PAVEMENT SLIPPERINESS, BUT ALSO WITH THE QUESTION OF WHY CERTAIN AGGREGATE TYPES BECOME MORE SLIPPERY THAN OTHERS. MOST OFTEN THE REASON IS THAT POLISH IMPARTS TO THEM A SMOOTHER POLISH THAN TO OTHERS. POLISH, IS USUALLY, THOUGH NOT ALWAYS THE CONSEQUENCE OF WEAR. IT IS THEREFORE LOGICAL TO ASK WHICH PROPERTIES OF MINERAL RELATE TO THEIR WEAR RESISTANCE AND HOW DO MINERALS WEAR? THE PRESENT REPORT ATTEMPTS TO ANSWER THESE QUESTIONS. NOT TOO SUPRISINGLY IT WAS ESTABLISHED THAT HARDNESS IS THE SINGLE MOST IMPORTANT CHARACTERISTIC WHICH CONTROLS AGGREGATE WEAR. IT WAS, HOWEVER, FOUND THAT MINERALS MAY ALSO BE WORN BY SOFT ABRASIVES AND THAT IN THIS CASE THE BALANCE BETWEEN STRAIN AND SURFACE ENERGIES MAY BE GOVERNING. /AUTHOR/

• Supplemental Notes:
  • Report No 15, 89 PP
• Corporate Authors:

  Pennsylvania State University, University Park

  Joint Road Friction Program
  University Park, PA  United States  16802
• Authors:
  • Stiffler, K
• Publication Date: 1967-11

Subject/Index Terms

• TRT Terms: Abrasives; Aggregates; Hardness; Pavement performance; Pavements; Polished aggregates; Slipperiness; Strain (Mechanics); Surface energy; Wear
• Old TRIS Terms: Strains
• Subject Areas: Geotechnology; Highways; Pavements;

Filing Info

• Accession Number: 00206739
• Record Type: Publication
• Files: TRIS
• Created Date: May 24 1994 12:00AM