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- W278064658 abstract "Like most transportation agencies, the Virginia Department of Transportation (VDOT) strives to provide a smooth, long-lasting, cost-effective highway system. For decades, research funds have been spent on developing and/or enhancing pavement structures and paving materials. In the last 15 years, VDOT’s asphalt program has evolved from the Marshall process to the SUPERPAVE® Mix Design system. Prior to implementation of the SUPERPAVE® system, VDOT began experimenting with Stone Matrix Asphalt (SMA). VDOT’s first SMA specifications were based on the American Association of State Highway and Transportation Officials (AASHTO) guide specifications developed after American transportation officials toured Germany in the early 1990’s. These early specifications were used on several demonstration sections in various parts of the state. In 1995, VDOT had its first successful high-profile SMA project on Interstate 95. Later in 1995, a second highprofile project was constructed over deteriorated jointed concrete pavement. These projects and their performance set the stage for a large-scale implementation effort. In 2002, a full implementation plan was outlined and in 2003 over 181,000 tonnes of SMA was placed on Virginia’s Interstate and Primary road networks. Since then, vast amounts of performance and material information has been collected. This paper will outline the performance of SMA, the changes in material specifications, and the lessons learned. Clearly, SMA is a superior asphaltic material. The additional binder provides long-term durability; the stone skeleton resists deformation. However, great care must be taken in each stage of SMA deployment – planning, producing and placing SMA. A lack of attention to detail in any stage will result in an unacceptable product." @default.
- W278064658 created "2016-06-24" @default.
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- W278064658 date "2006-07-01" @default.
- W278064658 modified "2023-09-27" @default.
- W278064658 title "Commonwealth of Virginia's (USA) implementation of stone matrix asphalt" @default.
- W278064658 hasPublicationYear "2006" @default.
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