This report documents the construction of three special pavement test sections on I-90 east of Spokane, Washington. The test sections included ultra-thin and thin whitetopping, Modified Class D open graded asphalt concrete, and micro/macro surfacing treatment. The majority of the project was built with a ½ inch Superpave mix. The test sections were built to assess their potential as mitigation measures for studded tire wear.
Initial data collect on the sections indicate a rate of rutting of 1.8 mm per year on the whitetopping, 2.2 on the Modified Class D, and Superpave sections and a rate of 2.6 mm per year on the micro/macro surfacing section. Extensive cracking was noted in the section of whitetopping with a three inch thickness.
March 27, 2007
Keith W. Anderson, Jeff Uhlmeyer, Linda Pierce, Jim Weston.
Washington (State). Dept. of Transportation.
- # of Pages: 114 p., 6,765 KB PDF.
- Subject: Whitetopping, Asphalt concrete, Surfacing, Rutting, Corrosion resistance, Superpave, Friction.
- Keywords: Ultra-thin whitetopping, thin whitetopping, open graded asphalt, micro surfacing, macro surfacing,
pavement wear, rutting, friction resistance.
- Related Publications:
Wear Resistant Pavement Study (WA-RD 657.2)
This abstract was last modified July 21, 2011