In 2002 the City of Edmonton (City) in conjunction with Alberta Environment through their Construction, Renovation and Demolition (CRD) Waste Reduction Advisory Committee (WRAC) undertook a study to evaluate the performance of recycled aggregates as a base course material for their pavements and sidewalks. The need for this study was necessitated as a result of a January 2001 report prepared by Thurber Engineering Ltd. for Alberta Environment entitled ““Market Development Study for Recycled Aggregate Products”, this report concluded that recycled aggregates were being used very successfully by the City as a base course material for their pavements and sidewalks. The report also concluded, however, that there was little hard data quantifying the performance of these pavements. It was subsequently agreed that the City would construct a series of pavement test sections to compare the performance of pavements built with and without recycled aggregates with comparable sub-grade conditions. The City of Edmonton also took this opportunity to evaluate the use of two types of Geosynthetics, currently specified in their contracts, a Biaxial Geogrid and a Non-woven geotextile. The City conducted inspection of the construction, appropriate testing to characterize the sub-grade conditions at the time of construction, as well as the performance measurements of the different pavement test sections during and after construction. This paper presents a description of the test sections and the results of 8 years of performance monitoring of the constructed pavement sections.
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