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- W19928235 abstract "As part of urban infrastructure renewal, significant amounts of asphaltic and Portland cement concrete rubble are being generated in many urban centers. Unfortunately, much of these materials being generated are often disposed of in landfills, or are being used as low value backfill material for utility cuts. The primary historic limitations to processing and using these concrete materials as higher value road construction materials is production rate and quality of product obtained using conventional crushing equipment, particularly if the stockpiled materials are contaminated with deleterious materials and reinforcing steel. The objectives of this study are to evaluate improved methods to process and recycle City of Saskatoon asphaltic pavement and Portland cement concrete rubble using impact crushing and screening, perform mechanistic laboratory characterization of the processed materials, and evaluate a pilot field application using recycled concrete materials in a road construction application. This project demonstrated impact crushing could efficiently process both asphaltic and Portland cement concrete rubble materials into quality road materials. Mechanistic laboratory characterization of the processed materials shows these materials to provide engineering properties that exceed that of conventional granular materials when characterized under typical field state conditions. Structural asset management measures taken on a pilot field test section showed the potential to use recycled Portland cement and asphalt concrete materials as the substructure materials in a typical arterial reconstruction application. Given increasing input costs for conventional granular road materials and construction energy, as well as the increased amounts of stockpiled concrete materials being generated as a part of infrastructure renewal, it is expected that effective use of recycled materials could provide the City of Saskatoon with significant long term savings and an environmentally sustainable solution to infrastructure renewal." @default.
- W19928235 created "2016-06-24" @default.
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- W19928235 date "2009-01-01" @default.
- W19928235 modified "2023-09-26" @default.
- W19928235 title "Use of Recycled Asphalt Concrete and Portland Cement Concrete in Road Construction" @default.
- W19928235 hasPublicationYear "2009" @default.
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