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Laboratory research on thermal behavior and characterization of the ultraviolet aged asphalt binder

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Abstract

Thermal, chemical and rheological properties of ultraviolet aged asphalt binder were characterized by differential scanning calorimetry (DSC), Fourier transform infrared (FTIR) and dynamic shear rheometer (DSR), respectively. Asphalt binder samples were made with different film thickness (50, 100, 200 and 500 μm) and suffered different ageing time (0, 48, 96 and 144 h), at a certain UV radiant intensity of 20 w m–2 in a self-made accelerated ageing oven. The results indicate that the UV light ageing would lead to the improvement of thermal behavior and the growth of the glass transition temperature of asphalt binder. This type of ageing can be also reflected from the FTIR spectra in terms of the characteristic peaks of the carbonyl groups and sulphoxides. The UV light ageing can change some rheological parameters of asphalt binder, such as complex modulus and phase angle. The ageing degrees of asphalt binder by this type of ageing test are mainly related to the ageing time and film thickness of the sample.

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Wu, S.P., Zhu, G.J., Liu, G. et al. Laboratory research on thermal behavior and characterization of the ultraviolet aged asphalt binder. J Therm Anal Calorim 95, 595–599 (2009). https://doi.org/10.1007/s10973-008-9252-3

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  • DOI: https://doi.org/10.1007/s10973-008-9252-3

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