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Abstract:The proper compaction of hot mix asphalt (HMA) pavements is vital for a stable and durable pavement. For dense-graded mixtures, it has been recommended that the initial in-place air voids at the time of construction should not be below 3 percent or above approximately 8 percent (1). Low initial in-place air voids have been shown to increase the potential for rutting and shoving, while high initial in-place air voids allow water and air to penetrate into the pavement. When air and water penetrate into a pavement, there is an increased potential for moisture damage, oxidative aging, raveling, and cracking (1).
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