Many City of Regina local streets are experiencing structural deterioration. As well, quality aggregate sources are becoming increasingly scarce in the Regina area. The City of Regina is also constructed on highly expansive lacustrine clay which makes construction with heavy equipment and potential adverse weather conditions a severe construction challenge. The City is investigating the use of cold in-place recycling and full depth strengthening rehabilitation of their urban streets in an attempt to reduce not only capital costs, but holistic user delay and environmental emissions costs within the City. The City is also investigating advanced mechanistic laboratory design and non-destructive road structural diagnostic technologies to accurately quantify in situ structural composition, condition states, and material constitutive properties to enable them to design cold in-place recycling systems. This field project proved to require significantly less energy to rehabilitate urban roads, yet still provide an equivalent or superior structural asset value relative to conventional energy intensive pavement rehabilitation systems. This project also employed state-of-the-art mechanistic road engineering design and asset management methods to help select and document the field performance of in-place road recycling construction systems. This project was nominated for the 2006 TAC Environmental Achievement Award. For the covering abstract of this conference see ITRD number E216511.
Abstract