Title: Super Related: Oregon DOT Uses Superpave Mix Designs for Perpetual Pavement Project
Abstract: This article describes the research done by the Oregon Department of Transportation (ODOT) on perpetual pavement. The goal of perpetual pavement design is to make pavement that doesn’t easily rut or fatigue, and requires only surface restoration in the future. In the article, the technical composition of such pavement design is discussed, as well methods for calculating stresses on the road. The article describes an instrumented research site on I-5 where ODOT and researchers from Oregon State University are monitoring asphalt pavements designed and built using perpetual pavement concepts. The site features strain gauges at the bottom of the asphalt pavement, temperature thermistors within the pavement, a traffic weigh-in-motion device, as well as a method for determining traffic wander within a lane. A feature unique to the site involves the placement of instrumentation within two types of pavement structure: hot mix asphalt (HMA) over aggregate base and HMA over rubblized jointed reinforced concrete pavement (JRCP). This type of instrumentation allows for the comparison of the effects of stiffness in the base materials used beneath an asphalt pavement. ODOT’s methods of data collection, along with plans for additional instrumented sites, are also discussed.
Publication Year: 2008
Publication Date: 2008-06-01
Language: en
Type: article
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