Evaluation of warm mix asphalt produced at various temperatures through dynamic modulus testing and four point beam fatigue testing
The potential for using Warm Mix Asphalt (WMA) in reducing the mixing and compacting temperatures of asphalt mixes is becoming more and more attractive nowadays. In this study, two WMA technologies - Sasobit® and Advera® were used. These WMAs were produced at different dosages and different production temperatures. Dynamic modulus testing and four-point beam fatigue testing were carried out to evaluate the rutting and fatigue characteristics of WMAs. In the dynamic modulus test, it was found that when the compaction temperature is higher, the overall values of |E*| for WMA were higher. Based on the four-point beam fatigue testing, most of the WMA's fatigue life were similar or higher than the control Hot Mix Asphalt (HMA) except for the WMA produced at 130°C; and it was found that the fatigue life for the WMA produced at temperature at around 115°C were the highest among all the samples tested. © 2011 ASCE.
Geotechnical Special Publication
Evaluation of warm mix asphalt produced at various temperatures through dynamic modulus testing and four point beam fatigue testing.
Geotechnical Special Publication(212 GSP), 123-130.
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