Many urban centres across Canada are experiencing significant deterioration of their streets, particularly aged streets constructed on weak subgrade materials that were not originally designed for modern traffic load conditions. Benefits of cold in-place recycling on urban service roads include reduced consumption of new source aggregates, reduced rehabilitation costs, and significant reductions in weather exposure during construction. Additional benefits of cold in-place recycling include significant reduction in load induced damages to surrounding streets, and reduced total construction energy required to rehabilitate streets, which reduces vehicle emissions released in urban environments associated with street rehabilitation projects. This paper demonstrates the use of mechanistic-climatic laboratory characterization applied to the rehabilitation of two cold in-place recycled City of Regina streets. This research presents the use of structural asset management performance measurements taken before and after strengthening of the Regina pilot test sites. This research also demonstrated cold in-place recycling to be similar in cost to conventional full depth remove and replace street rehabilitation systems. For the covering abstract of this conference see ITRD number E216511.
Abstract