1. Comparison of performance characterization of asphalt mastic prepared by foamed and unfoamed asphalt binders.
- Author
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Liu, Shengjie, Zhou, Shengbo, and Peng, Aihong
- Subjects
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ASPHALT , *ASPHALT pavements , *INFRARED absorption , *ASPHALT modifiers , *THERMAL stability , *ANALYSIS of variance - Abstract
Applying foamed warm-mix asphalt in pavement has attracted great attention, but its effects on asphalt mastic are not clear. This research investigated and compared the performance characterization of asphalt mastic prepared by foamed and unfoamed binders. The functional group information, thermal behavior, and rheological characteristics were explored using a series of experiments. Results show that both foamed and unfoamed asphalt mastics have similar function groups, which indicates that foaming process does not change the infrared absorption structure of asphalt mastic. Besides, asphalt foaming seems not affect the thermal stability of mastic, although some foaming water is still present. The high- and low-temperature performances of asphalt mastic were slight weaken by foaming water, but the effect is not significant based on the analysis of variance. The asphalt–aggregate interaction of asphalt mastic is significantly improved by the foaming behavior. This study concluded that foamed asphalt mastic could achieve the similar performances with unfoamed asphalt mastic. [ABSTRACT FROM AUTHOR]
- Published
- 2021
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