Surface Renewal of an Urban Motorway in the Montreal Area using an Ultra-thin Asphalt Concrete Pavement

In 2020, paving work was performed to renew the surface of the Autoroute 25 urban motorway in the Montreal area. The paving solution needed to satisfy an operational requirement as execution of the work needed to be performed at night, and functional requirements as the technique needed to provide performance regarding smoothness, friction, rutting and surface defects. An Ultra-Thin Asphalt Concrete Pavement (UTACP) technique was selected. There is a long history of successful applications of this UT ACP technique in France and in the USA. The uniqueness of the Autoroute 25 work relates to the placement technique, which allowed the usage of conventional equipment, and the tack coat, which was designed to avoid bleeding in the wheel path and snowplows surface scuffing outside the wheel path. This paper provides information on the engineering that lead to the selection of the ultra-thin asphalt concrete pavement. It provides the reasons as to why it was critical to select a paving technique with an aggressive surface texture to satisfy the contract friction requirements. Information is provided as to how the specifications were developed to facilitate the administration and the execution of the work. Finally, performance results regarding friction and smoothness are presented.

Language

  • English

Media Info

  • Media Type: Print
  • Pagination: pp. 355-377.
  • Monograph Title: Proceedings of the Sixty-Sixth Annual Conference of the Canadian Technical Asphalt Association (CTAA): Cyberspace

Subject/Index Terms

Filing Info

  • Accession Number: 01839210
  • Record Type: Publication
  • Source Agency: Transportation Association of Canada
  • Files: ITRD, TAC
  • Created Date: Mar 22 2022 2:50PM