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Rheological Properties of Derived Fractions Composed of Aromatics, Resins, and Asphaltenes
The chemical makeup of the asphalt binder determines its rheological and mechanical properties. The objective of this study is to reveal the rheological properties of various fractions composed of aromatics, resins, and asphaltenes. First, asphalt binder (pen grade 60/80) was separated into four fractions and then resins and asphaltenes were respectively doped into aromatics to fabricate four derived fractions. The frequency-temperature sweep was conducted by a dynamic shear rheometer (30–80 °C, 0.01–20 Hz, and 0.01% shear strain). The complex shear modulus master curves of various fractions were developed based on measured data. The test results showed that the increase in the content of resins or asphaltenes resulted in the increased complex shear modulus, stated that an increase in polarity leaded to higher stiffness. Meanwhile, various fractions had different sensitivity to temperature. Resins showed the most sensitivity to temperature change among all the fractions. The synergy of resins and aromatics resulted in the different master curve shapes of derived fractions. Furthermore, the predicted model of the master curve based on composite material idea showed a good fitting trend within a frequency over 0.1 Hz. Future work should focus on the interaction of aromatics/resins and aromatics/asphaltenes to fully determine the effect of SARA fractions.
Rheological Properties of Derived Fractions Composed of Aromatics, Resins, and Asphaltenes
The chemical makeup of the asphalt binder determines its rheological and mechanical properties. The objective of this study is to reveal the rheological properties of various fractions composed of aromatics, resins, and asphaltenes. First, asphalt binder (pen grade 60/80) was separated into four fractions and then resins and asphaltenes were respectively doped into aromatics to fabricate four derived fractions. The frequency-temperature sweep was conducted by a dynamic shear rheometer (30–80 °C, 0.01–20 Hz, and 0.01% shear strain). The complex shear modulus master curves of various fractions were developed based on measured data. The test results showed that the increase in the content of resins or asphaltenes resulted in the increased complex shear modulus, stated that an increase in polarity leaded to higher stiffness. Meanwhile, various fractions had different sensitivity to temperature. Resins showed the most sensitivity to temperature change among all the fractions. The synergy of resins and aromatics resulted in the different master curve shapes of derived fractions. Furthermore, the predicted model of the master curve based on composite material idea showed a good fitting trend within a frequency over 0.1 Hz. Future work should focus on the interaction of aromatics/resins and aromatics/asphaltenes to fully determine the effect of SARA fractions.
Rheological Properties of Derived Fractions Composed of Aromatics, Resins, and Asphaltenes
RILEM Bookseries
Di Benedetto, Hervé (Herausgeber:in) / Baaj, Hassan (Herausgeber:in) / Chailleux, Emmanuel (Herausgeber:in) / Tebaldi, Gabriele (Herausgeber:in) / Sauzéat, Cédric (Herausgeber:in) / Mangiafico, Salvatore (Herausgeber:in) / Xiao, Feipeng (Autor:in) / Wang, Jiayu (Autor:in)
RILEM International Symposium on Bituminous Materials ; 2020 ; Lyon, France
Proceedings of the RILEM International Symposium on Bituminous Materials ; Kapitel: 205 ; 1619-1625
RILEM Bookseries ; 27
26.09.2021
7 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
Combustion properties of saturates, aromatics, resins, and asphaltenes in asphalt binder
| Online Contents | 2017
Combustion properties of saturates, aromatics, resins, and asphaltenes in asphalt binder
| British Library Online Contents | 2017