United States Department of Transportation
i
Enhanced In-Place Density: Accurate Measurements Help To Ensure Adequate Density
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2020-09-15
[PDF-14.96 MB]
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Abstract:Although several factors can influence the performance of an asphalt pavement, one of the most important is in-place density. A small increase in density can potentially lead to a significant increase in service life of asphalt. Highway agencies use specifications to achieve acceptable in-place density on their asphalt pavements. Density acceptance test results were analyzed from several State Departments of Transportation across the country to determine the state of practice for achieving in-place density. The results were used to identify States with effective in-place density specifications that minimized the amount of test results below the 92.0 percent threshold. Most agencies with highly effective specifications measured density using core specimens from the roadway along with frequent mixture samples.
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