Abstract Manager

In 2003, the first trial of Cold In-Place Recycled Expanded Asphalt Mix (CIREAM) was constructed adjacent to a Cold In-Place Recycling (CIR) mix on Highway 7, east of Perth, Ontario.  The major difference between the two processes is that CIR uses emulsion and CIREAM uses foamed asphalt as binding agent. From this successful trial, CIREAM has become an established cold recycling pavement treatment used by MTO.

After 20 years in service, this section of highway has reached the end of its lifecycle.  Continuous performance monitoring of these two sections have been undertaken over the years.  In recent years, typical performance monitoring was carried out using the Ministry’s Automated Road Analyzer (ARAN) and Falling Weight Deflectometer (FWD) testing. Laboratory testing was carried out to determine the resilient modulus and indirect tensile strength of the mixes. In addition, Ultrasonic Pulse Velocity (UPV) testing was completed to assess the overall quality of the mixes.

This paper summarizes the pavement performance conditions and the results over the years and provides documentation of the end of lifecycle of the two sections. The results confirmed both CIR and CIREAM are performing similarly after 20 years of service.