Urban roadway pavement rutting, particularly at signalized intersections, is a significant issue and a challenge for those responsible for municipal pavement infrastructure. The Cities of Calgary and Lethbridge have recently installed various types of pavement surfacing materials with the objective of assessing performance under in-service conditions. The limited experience with these types of hot mix asphalt materials has made it necessary for the municipal agencies to adopt available methods to provide some indication of their performance prior to their widespread use in construction. The Asphalt Pavement Analyzer (APA) has been shown to be a useful tool for the assessment of the permanent deformation (rutting) resistance of HMA materials. This paper describes how APA testing was used for the assessment of HMA materials within the context of projects undertaken by the Cities of Lethbridge and Calgary, in 2003 and 2004. Guidance regarding the use of APA results, including benefits as well as limitations, is provided. For the covering abstract of this conference see ITRD number E211426.
Samenvatting