Improving Frictional Properties of Pavement Surfaces in Canadian Airfields through Asphalt Concrete Mix Design

Canadian airport agencies have recently experienced problems associated with the poor frictional properties of newly constructed Hot Mix Asphalt Concrete (HMAC) pavements. Since poor frictional properties may result in lower skid resistance and subsequently pose a safety issue, there is a need to identify the causes of this problem. Research work is urgently needed to assess current Canadian asphalt mix specifications and investigate possible ways of updating them to ensure that satisfactory levels of skid resistance are available on Canadian airfields. The main objective of this paper is to develop a mathematical model relating friction evaluated in the laboratory, in terms of British Pendulum Number (BPN), to mix properties. The testing program included friction and Indirect Tensile Strength (ITS) tests. Effects of asphalt content and aggregate gradation on the frictional properties of airfield mixes were evaluated during the testing program. Test results showed that choosing the aggregate gradation is one of the most important factors to enhance airfield pavement friction. The paper presented simple procedures to predict the friction and check if the mechanical properties accepted at this level of friction or not. The work completed in this research provides a good tool to evaluate airfield mixes prior to construction.

Language

  • English

Media Info

  • Media Type: Print
  • Pagination: pp. 177-190.
  • Monograph Title: Proceedings of the Forty-Eighth Annual Conference of the Canadian Technical Asphalt Association (CTAA): Halifax, Nova Scotia, November 2003

Subject/Index Terms

Filing Info

  • Accession Number: 01604985
  • Record Type: Publication
  • Source Agency: Transportation Association of Canada (TAC)
  • Files: ITRD, TAC
  • Created Date: Jul 26 2016 5:02PM