United States Department of Transportation
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Technical Assistance for Quantifying Emissions from Asphalt Mixtures
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2025-03-01
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[PDF-2.25 MB]
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Edition:Final Report April 2023 – March 2025
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Abstract:This study evaluated the effects of using Warm Mix Asphalt (WMA) technologies to reduce asphalt production temperatures on energy consumption and pavement performance in Alabama. Two field experiments were conducted. The first compared two chemical WMA mixtures to a conventional Hot Mix Asphalt (HMA), while the second used one of the WMA technologies from the first experiment to explore further temperature reductions. Each experiment included field construction, burner fuel monitoring, and laboratory performance testing using IDEAL-CT, HWTT, HT-IDT, and AMPT tests. Long-term fatigue and rutting performance were predicted using FlexPAVE™ modeling.
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