The impact that Superpave aggregate specifications will have on the Calgary asphalt industry.

摘要

The Strategic Highway Research Program spent 150 million dollars between October 1987 and March 1993 to develop a better way to design asphalt pavements. This new design procedure and the mix it produces has been labeled Superpave (Superior performing asphalt pavements).;The focus of this paper was to examine the aggregate component of Superpave and evaluate the impact this would have on the industry in The City of Calgary. What I identified was that The City of Calgary materials operation has a good source of stone and the existing crushed material meets the minimum requirement for a major roadway like Stoney Trail. However The City of Calgary plant has not produced any Superpave mix materials. All of the Superpave material placed in The City of Calgary since 1995 have been produced by contracted suppliers, who have had to upgrade aggregate stock piles to provided compliant materials.;The question that should be raised is, should The City of Calgary asphalt plant be given the opportunity to bid on the production of asphalt mix in all of the Superpave contracts?