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- W576873738 abstract "The International Roughness Index (IRI) is a widely used, internationally recognized index of roadway surface roughness. It is used by some agencies as a measure of network performance, for project level evaluation of pavement rehabilitation strategies, and as a key performance measure for end product specifications in new construction. While IRI data are used extensively, the raw profiles from which the IRI are calculated are generally not further analyzed. This paper explores the utilization of profile data from high-speed inertial profiler surveys for roughness design of a 30 km long two-lane highway on Vancouver Island by prioritizing areas to apply asphalt level course to achieve an acceptable riding surface. Pre-construction surveys of roughness took place in 2007. Construction, using an overall strategy of Hot In-Place (HIP) recycling combined with targeted application of levelling course, took place in 2008. Post-construction surveys took place in 2009. Data from various sections of the highway were sampled and actual post-construction roughness was compared to predicted post-construction roughness in areas with HIP alone and areas where levelling course was applied. In addition, an analysis of the reduction in various wavelengths contributing to roughness was conducted to evaluate the validity of the design assumptions. (A)" @default.
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- W576873738 date "2012-01-01" @default.
- W576873738 modified "2023-09-24" @default.
- W576873738 title "Utilization of Roughness Data in a Pavement Rehabilitation Design and Post-Construction Evaluation" @default.
- W576873738 hasPublicationYear "2012" @default.
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