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Wear resistant pavement study.
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Wear resistant pavement study.
  • Alternative Title:
    Contract 6582 I-90 Sullivan Road to Idaho State Line, Phase I MP 292.10 to 299.82.
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  • Abstract:
    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 Superpave Class half inch mix. The test sections were built to assess their potential as mitigation measures for studded tire wear. Final results after five plus years of monitoring indicate the micro/macro surfacing has a very short service life, the Modified Class D HMA has a slightly shorter service life than the Superpave Class half Inch HMA, and that the whitetopping sections had the longest service life. However, the ultrathin whitetopping (3-inch) failed due to cracking within a very short period. None of the treatments provided a long-term solution for studded tire wear. Cost/benefit considerations would point to the Superpave Class half Inch as the most cost effective choice for this section of I-90.
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