Evaluation of warm mix technologies for use in asphalt rubber - asphaltic concrete friction courses (AR‐ACFC) : final report.
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2016-07-01
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Edition:Final report
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Abstract:The objective of this research project was to determine whether warm mix asphalt (WMA) technologies can be
used by the Arizona Department of Transportation (ADOT) for the production of an asphalt rubber‐asphaltic
concrete friction course (AR‐ACFC) without detrimental effects on performance of the pavement. The study
consisted of a laboratory study and the monitoring of a field construction project. Three ADOT‐approved warm
mix additives (Evotherm, Sasobit, and Advera) were investigated. The study showed that when the additives
were used at the manufacturer’s suggested target dosage level there was no negative impact on the durability
or the moisture susceptibility of the AR‐ACFC as compared to the control (no additive) mix.
The field study confirmed that the use of WMA technologies during AR‐ACFC construction is feasible with no
adverse effects on paving operations.
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