In 1960 the Ontario Ministry of Transportation and Communications constructed three 6-mile Test Roads in southwestern Ontario to determine the influence of substantial diiferences in the temperature susceptibilities of three 85/100 penetration asphalt cements on pavement service performance. Each 6-mile Test Road consisted of three 2-mile test pavements, with an 85/100 penetration asphalt cement of different temperature susceptibity in each 2-mile section. These nine test pavements were sampled and analysed in 1969, at a pavement age of 9 years, and the results were published in the 1972 AAPT Proceedings. They were again sampled and analysed in 1975 at a pavement age of 15 years. The test findings in 1975 are reviewd in the present paper, and are compared with those obtained in 1969. This paper also analyses the results of low temperature transverse pavement cracking surveys that have been conducted annually from 1968 to 1978. On the basis of the highly useful data presented in this paper on three Ontario Test Roads that were built in 1960, as well as the valuable information obtained from the more recently constructed Brampton Test Road in Ontario and the Ste. Anne Test Road in Manitoba, it is recommended that more Test Roads be built throughout Canada as a part of normal construction operations, but with certain portions of occasional project being carefully marked out and set aside as Test Roads for long term continuous and periodic testing and evaluation. Only in this way can the existing wide gaps between pavement design, pavement distress, and pavement performance be successfully bridged. Test Roads have the great advantage of providing the means for monitoring the service behaviour of pavements under the environmental conditions that actually exist in the field, which can never be precisely reproduced in laboratory studies. (Author)

  • Corporate Authors:

    Canadian Technical Asphalt Association

    300-895 Fort Street
    Victoria, British Columbia  Canada  V8W 1H7
  • Authors:
    • Mcleod, N W
  • Publication Date: 1978

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Filing Info

  • Accession Number: 00319195
  • Record Type: Publication
  • Report/Paper Numbers: Reprint
  • Files: TRIS
  • Created Date: Dec 11 1980 12:00AM