The Region of Waterloo (Region) has a long history of applying innovative pavement technologies. The engineering staff at the Region realized that the conventionally used pavement resurfacing, reconstruction or mill and overlay are often not cost effective and environmentally friendly solutions and decided to use innovative, green technologies. The following pavement rehabilitation technologies are commonly used by the Region now: Cold In-place Recycling (CIR); Full Depth Reclamation (FDR) using expanded asphalt; pulverizing the existing pavement and resurfacing; and Cold In-Place Recycling with Expanded Asphalt Material (CIREAM). The Region is also looking forward to the application of Hot In-place Recycling (HIR) that is coming back to Ontario. Pavement preservation technologies have also been used and include crack sealing, microsurfacing, bonded wearing course and thin overlays. The Region has used reclaimed RAP in the HMA mixes for a long time. Warm Mix Asphalt has been tried and is being considered in future works. Being aware that the most sustainable pavements are the ones that last the longest, the Region has focused on proper longitudinal joint construction using echelon paving, infrared heaters and are planning the use WMA in the future.
