Recent Developments with Seal Coating in Alberta

Seal coating, using either single sized (chips) or graded aggregate, has been used as a surface treatment on Alberta rural roadways for many years. There is a general consensus within Alberta Transportation and many rural road agencies that seal coating is a highly effective and inexpensive treatment for preserving pavements. However, this type of construction often generates complaints from the travelling public, especially on higher volume roadways. These complaints are broadly related to vehicle damage associated with "loose chips", increased tire noise, and to a lesser extent travel delays and questionable workmanship. In recent years Alberta Transportation has used, on a trial basis, alternative materials, application techniques and seal coating systems as a means to alleviate the public complaints and/or to improve the overall robustness of the seal coat product. This paper presents an overview and the findings related to the seal coating work carried out recently in Alberta using polymer-modified emulsions, fog sealing, prespraying outside of the wheel paths; racked-in chip sealing system and fibre-reinforced chip sealing system. (A)

Language

  • English

Media Info

  • Pagination: p. 271-293

Subject/Index Terms

Filing Info

  • Accession Number: 01149429
  • Record Type: Publication
  • Source Agency: Transportation Association of Canada (TAC)
  • Files: TAC
  • Created Date: Jan 28 2010 7:32AM