Advertisement

Skid resistance of marginal durability aggregates

  • Stewart I. E. 
International Symposium on Aggregates Theme 3. Tests on Aggregates
  • 35 Downloads

Abstract

Laboratory polishing is commonly used to evaluate aggregate skid resistance characteristics. For marginal to poor durability stones, field results may differ from those predicted from polishing tests, giving significantly higher or lower skid resistance.

These differences can be related to the petrographic characteristics of the rocks. Three distinct textures have been identified which lead to predictable variations between field and laboratory polishing. For one texture type, the field skid resistance is much lower than laboratory results indicate. As this texture is found in many skid resistance aggregates, the effect is considered important, particularly in evaluating new deposits.

Keywords

Source Rock Blast Furnace Slag Asphaltic Concrete Volcanic Breccia Skid Resistance 

Resistance au derapage de granulats alterables

Résumé

Le polissage en laboratoire est largement utilisé pour l'évaluation des caractéristiques de résistance au dérapage des granulats. Pour des matériaux de durabilité moyenne à faible, les résultats sur chaussée peuvent être différents de ceux obtenus en laboratoire, avec une résistance au dérapage d'une valeur nettement plus élevée ou plus faible.

Ces différences peuvent être attribuées aux caractéristiques pétrographiques des matériaux. Trois textures distinctes, et susceptibles d'influencer les variations prévisibles entre le polissage en place et en laboratoire, ont été identifiées. Pour l'un de ces types, la résistance au dérapage est beaucoup plus faible en place que ne l'indiquaient les résultats en laboratoire. Etant donné que cette texture se rencontre dans de nombreux granulats destinés aux revêtements à haute qualité anti-dérapante, cet effet est considéré comme important, particulièrement pour l'évaluation de nouveaux gisements.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. DHIR S.H.M. and MULLEN W.G. (1971): “Factors influencing Aggregate Skid Resistance Properties”, Highway Research Record 376, pp. 136–148.Google Scholar
  2. DAVIDSON W.H. (1972): “The Influence of Constitution on the Engineering Properties of Crushed Volcanic Breccias” Proc. 6th ARRB Conference, Vol. 6, Pt. 5, pp. 71–90.Google Scholar
  3. GOODWIN W.A. (1968): “Pre-Evaluation of Pavement Materials for Skid Resistance—A Review of U.S. Techniques”. Highway Research Board. Spec. Rpt. 101 pp. 69–79.Google Scholar
  4. HEATON B.E., EMERY, J.J. and KAMEL N.A. (1978): “Prediction of Pavement Skid Resistance Performance”. Proc. 9th ARRB Conference, Session 22, pp. 1–6.Google Scholar
  5. HOSKING J.R. (1973): “The Effect of Aggregate on Skidding Resistance of Bituminous Surfacings: Factors other than Resistance to Polishing”. Dept. of the Environment. TRRL Report LR 553 pp. 1–28.Google Scholar
  6. JAMES J.G. (1967): “Calcined Bauxite and other Artificial Polish—Resistant Roadstones”. Ministry of Transport. RRL Report LR 84, pp. 1–20.Google Scholar
  7. MACLEAN D.J. and SHERGOLD F.A. (1958): “The Polishing of Roadstone in Relation to the Resistance to Skidding of Bituminous Road Surfacings”. D.S.I.R. Road Res. Tech. Pap. No. 43, pp. 1–30.Google Scholar
  8. NEVILLE G. (1974): “A Study of the Mechanism of Polishing of Roadstones by Traffic”. Dept. of the Environment. TRRL Report 621, pp. 1–34.Google Scholar
  9. RUFFORD P.G. and GAUGHAN R.L. (1974): “A Study of the Effect of Speed on the Skid Resistance of Fine and Coarse Textured Surfacings Using the Mu-meter”. Proc. 7th ARRB Conference, Pt. 7, pp. 394–407.Google Scholar
  10. SZATKOWSKI W.S. and HOSKING J.R. (1972): “The Effect of Traffic and Aggregate on the Skidding Resistance of Bituminous Surfacings”. Dept. of the Environment. TRRL Report LR 504, pp. 1–20.Google Scholar
  11. WALTER P.D., SIMPSON J.F. and MURRIE S.J. (1979): “Development of Blast Furnace Slag as an Aggregate on Road Surfacing”. AIMM, Illawarra Branch. Utilisation of Steelplant Slags Symposium, February, 1979, pp. 87–93.Google Scholar
  12. WEST N.S. and ROSS T.F. (1962): “Polishing of Road Surfaces in New South Wales”. Proc. 1st ARRB Conference, pp. 769–778.Google Scholar
  13. WILSHIRE A.G. (1967): “The Prospect Alkaline Diabase-Picrite Intrusion, New South Wales, Australia”. J. Pet, Vol. 8, Pt. 1, pp 97–163.CrossRefGoogle Scholar

Copyright information

© International Association of Engineering Geology 1984

Authors and Affiliations

  • Stewart I. E. 
    • 1
  1. 1.Department of Main RoadsN.S.W. Materials and Research LaboratoryMilsons PointAustralia

Personalised recommendations