THE PERFORMANCE OF STEEL SLAG AGGREGATES: SKIDDING RESISTANCE

This paper reports the assessment of steel slag aggregate, with special reference to its contribution to producing skid-resistant surfaces. A new method was developed for producing specimens for measuring the polished stone value (PSV) of steel aggregate. The PSV of steel slag aggregate was found to be 63.5, averaged over 70 tests. Comparisons with the British Standard PSV test method showed that the new 'riffle' test method produced specimens with 33% less variability. Confidence limits were obtained for the measurement of PSV using this method. The possibility of using 3mm steel slag aggregate in an epoxy-resin bonded surfacing was evaluated, and found to give acceptable performance. 10mm surface dressings and 14mm close graded wearing course surfaces were laid on a stretch of road in the early 1980s. When measured in 1994, the 10mm dressings still had almost as good skid resistance (PSV) performance as the original aggregate suggested, and the 14mm dressings had even better performance. Thus, steel slag surfaces appear to retain their skidding resistance with time at least as well as comparable stretches of road surfaced with natural aggregate. For the covering abstract see IRRD 877211.

  • Corporate Authors:

    THE INSTITUTE OF ASPHALT TECHNOLOGY

    OFFICE 5, TRIDENT HOUSE, CLARE ROAD
    STANWELL, MIDDLESEX  United Kingdom  TW19 7QU
  • Authors:
    • Ibberson, C M
    • Stock, A F
    • Taylor, I F
  • Publication Date: 1995

Language

  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00722422
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD
  • Created Date: Jun 28 1996 12:00AM