RUTTING IN THE URBAN CONTEXT AND ITS MITIGATION ---PROCEEDINGS OF THE THIRTY-SECOND ANNUAL CONFERENCE OF THE CANADIAN TECHNICAL ASPHALT ASSOCIATION

Rutting of asphalt pavements on major routes in the municipality of metropolitan Toronto has become a serious problem. A field and laboratory evaluation of this rutting and its causes is in progress. Heavy vehicle loading has been considered, with the observation that nearly all bus axle loadings exceed normal legal limits. Given that this traffic must be handled, action to mitigate rutting potential has focussed on the quality of the binder course hot mix. Natural rounded sands and a VMA hump gradation appear to be the prime factors contributing to low shear strength in asphalt mixes. Use of manufactured sands in high stability binder course mixes with adequate air voids has been recommended, along with close control of compaction to ensure that high stabilities are ensured in the field.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0921317069
• Corporate Authors:

  POLYSCIENCE PUBLICATIONS INC.

  44 SEIZE ARPENTS, P.O. BOX 148
  MORIN HEIGHTS, QUEBEC  Canada  J0R 1H0
• Authors:
  • Emery, J J
  • Johnston, T H
• Publication Date: 1987

Language

• English

Media Info

• Pagination: p. 340-51
• Serial:
  • Canadian Technical Asphalt Association, Proceeding
  • Publisher: POLYSCIENCE PUBLICATIONS INC.

Subject/Index Terms

• TRT Terms: Axle load force; Compaction; Flexible pavements; Mix design; Porosity; Prevention; Rutting; Sand; Shear strength; Stability (Mechanics); Strength of materials; Urban areas
• Geographic Terms: Canada
• Subject Areas: Construction; Highways; Security and Emergencies;

Filing Info

• Accession Number: 00487144
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• ISBN: 0-921317-06-9
• Files: ITRD, TRIS
• Created Date: Sep 30 1989 12:00AM