Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Assessing the aging tendency of asphalt binder using a thermal cycler
This research study utilized a Thermal Cycler to simulate the field aging conditions and compared with standard laboratory aging methods. The Thermal Cycler intends to simulate asphalt binder aging under specific environmental conditions. The main purpose of the study is to assess the aging potential in the binder during the thermo-oxidation process. Sulphur, Methane Phosphorus Compound, Elvaloy, Multiwalled Carbon nanotubes, Carbon black nanoparticles, and Graphene nanoplatelets were used and their influence was studied on virgin binder considering their aging sensitivities. Scanning Electron Microscope, Dynamic shear rheometer, and Fourier Transform Infrared spectroscopy were used to study dispersion, rheology, and chemical changes in the binder, respectively. The results showed that aging increases the oxidation process causing more oxygen content formation. The amount of aging in PAV was equivalent to 28 days aged in Thermal Cycler. At higher temperatures, a substantial improvement in Thermal Cyclic aging was observed and around 6–8 h of aging at 110°C produced the same effect as that in PAV. Graphene nanoplatelets modified bitumen with the least Carbonyl and Sulfoxide index is relatively effective to retard aging rate. Sulphur and Methane Phosphorous Compound are relatively more sensitive to thermo-oxidative aging than the rest of the modified blends.
Assessing the aging tendency of asphalt binder using a thermal cycler
This research study utilized a Thermal Cycler to simulate the field aging conditions and compared with standard laboratory aging methods. The Thermal Cycler intends to simulate asphalt binder aging under specific environmental conditions. The main purpose of the study is to assess the aging potential in the binder during the thermo-oxidation process. Sulphur, Methane Phosphorus Compound, Elvaloy, Multiwalled Carbon nanotubes, Carbon black nanoparticles, and Graphene nanoplatelets were used and their influence was studied on virgin binder considering their aging sensitivities. Scanning Electron Microscope, Dynamic shear rheometer, and Fourier Transform Infrared spectroscopy were used to study dispersion, rheology, and chemical changes in the binder, respectively. The results showed that aging increases the oxidation process causing more oxygen content formation. The amount of aging in PAV was equivalent to 28 days aged in Thermal Cycler. At higher temperatures, a substantial improvement in Thermal Cyclic aging was observed and around 6–8 h of aging at 110°C produced the same effect as that in PAV. Graphene nanoplatelets modified bitumen with the least Carbonyl and Sulfoxide index is relatively effective to retard aging rate. Sulphur and Methane Phosphorous Compound are relatively more sensitive to thermo-oxidative aging than the rest of the modified blends.
Assessing the aging tendency of asphalt binder using a thermal cycler
Alam, Gohar (Autor:in) / Hafeez, Imran (Autor:in) / Yaseen, Ghulam (Autor:in) / Nasir, Muhammad Ali (Autor:in) / Hussain, Azhar (Autor:in) / Ahmad, Naveed (Autor:in)
International Journal of Pavement Engineering ; 23 ; 2503-2514
03.07.2022
12 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Unbekannt
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