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Aging Characteristics of Asphalt Binder under Strong Ultraviolet Irradiation in Northwest China

Author

Listed:
  • Ling Zou

    (School of Transportation, Southeast University, Nanjing 211189, China
    CCCC First Highway Consultants Co., Ltd., Xi’an 710075, China
    School of Highway, Chang’an University, Xi’an 710064, China)

  • Yan Zhang

    (CCCC First Highway Consultants Co., Ltd., Xi’an 710075, China)

  • Bangyi Liu

    (School of Transportation, Southeast University, Nanjing 211189, China)

Abstract

Asphalt pavement is significantly affected by ultraviolet (UV) aging. Therefore, the establishment of an asphalt UV aging evaluation system is desirable for highway construction in areas which experience strong UV radiation. In this study, Dunhuang City in Gansu Province (northwest China) was used as the research site. Base and SBS modified asphalts were selected, and their performance changes before and after UV aging were studied. An asphalt UV aging evaluation system was established, including the conditions for an indoor, accelerated UV aging test as well as evaluation indicators. The results showed that the adverse effect of UV aging on asphalt performance was greater than that of RTFOT and PAV, and that the low-temperature performance of asphalt degraded most rapidly. SBS modified asphalt was more resistant to UV aging than base asphalt, while 60/80 pen grade base asphalt was found to be unsuitable for use on pavements which are exposed to strong UV radiation. The residual penetration, penetration attenuation index at 25 °C, and residual ductility of the asphalt were used as indicators to characterize the aging of asphalt, while the fracture energy method was used as a supplementary evaluation method.

Suggested Citation

  • Ling Zou & Yan Zhang & Bangyi Liu, 2021. "Aging Characteristics of Asphalt Binder under Strong Ultraviolet Irradiation in Northwest China," Sustainability, MDPI, vol. 13(19), pages 1-19, September.
    • Handle: RePEc:gam:jsusta:v:13:y:2021:i:19:p:10753-:d:644764
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    References listed on IDEAS

    as
    1. Liu, H. & Hu, B. & Zhang, L. & Zhao, X.J. & Shang, K.Z. & Wang, Y.S. & Wang, J., 2017. "Ultraviolet radiation over China: Spatial distribution and trends," Renewable and Sustainable Energy Reviews, Elsevier, vol. 76(C), pages 1371-1383.
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    Cited by:

    1. Teng Wang & Zhirong Chen & Jinlong Hong & Zhen Liao & Di Wang & Dongdong Yuan & Yufei Zhang & Augusto Cannone Falchetto, 2023. "Preparation and Properties of High-Viscosity Modified Asphalt with a Novel Thermoplastic Rubber," Sustainability, MDPI, vol. 15(16), pages 1-19, August.

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