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Preparation and Properties of High-Viscosity Modified Asphalt with a Novel Thermoplastic Rubber

Author

Listed:
  • Teng Wang

    (School of Highway, Chang’an University, South 2nd Ring Road Middle Section, Xi’an 710064, China
    Key Laboratory for Special Area Highway Engineering of Ministry of Education, Chang’an University, South 2nd Ring Road Middle Section, Xi’an 710064, China)

  • Zhirong Chen

    (School of Highway, Chang’an University, South 2nd Ring Road Middle Section, Xi’an 710064, China
    Key Laboratory for Special Area Highway Engineering of Ministry of Education, Chang’an University, South 2nd Ring Road Middle Section, Xi’an 710064, China)

  • Jinlong Hong

    (School of Civil Engineering, Chang’an University, South 2nd Ring Road Middle Section, Xi’an 710064, China)

  • Zhen Liao

    (Guangxi Communications Investment Group Corporation Ltd., Nanning 530022, China)

  • Di Wang

    (Department of Civil Engineering, Aalto University, 02150 Espoo, Finland
    Hangzhou Telujie Transportation Technology Co., Ltd., Hangzhou 311121, China)

  • Dongdong Yuan

    (School of Highway, Chang’an University, South 2nd Ring Road Middle Section, Xi’an 710064, China
    Key Laboratory for Special Area Highway Engineering of Ministry of Education, Chang’an University, South 2nd Ring Road Middle Section, Xi’an 710064, China)

  • Yufei Zhang

    (School of Highway, Chang’an University, South 2nd Ring Road Middle Section, Xi’an 710064, China
    Key Laboratory for Special Area Highway Engineering of Ministry of Education, Chang’an University, South 2nd Ring Road Middle Section, Xi’an 710064, China)

  • Augusto Cannone Falchetto

    (Department of Civil Engineering, Aalto University, 02150 Espoo, Finland)

Abstract

With the increasing demand for improved road performance and sustainable development, modified asphalt is increasingly being used in pavement construction. This study investigates the preparation and properties of a novel high-viscosity modified asphalt. Firstly, different contents of novel thermoplastic rubber (NTPR) were mixed with neat asphalt to prepare high-viscosity modified asphalt (HVA). Then, the basic physical properties containing penetration, a softening point, ductility, and viscosity were conducted. Moreover, the rheological properties of the HVA before and after aging were analyzed via a dynamic shear rheometer test and a bending beam rheometer test. Finally, the dispersity of the modifier in HVA was analyzed via fluorescence microscopy. The results show that adding the NTPR restricts the flow of asphalt to a certain extent and improves the high temperature performance of asphalt. Furthermore, the apparent viscosity of HVA with various contents increases less and is always less than 3 Pa·s. Although adding NTPR makes the asphalt brittle, the HVA can meet the requirements when the NTPR is from 6% to 11%. With the increase in the NTPR, the modifier forms a mesh structure in the asphalt, enhancing its stability. Considering the above results, HVA with 10~11% of NTPR is recommended because it has better comprehensive properties.

Suggested Citation

  • 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.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:16:p:12190-:d:1213807
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    References listed on IDEAS

    as
    1. Jinzhao Jin & Yongzhe Miao & Huaiwu Zhao & Jiao Chen & Longbang Qing & Ru Mu & Xiangshang Chen & Zixiang Li, 2022. "Study on the Self-Healing Performance of Microcapsules and Microcapsule-Containing Asphalt," Sustainability, MDPI, vol. 14(19), pages 1-12, September.
    2. 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.
    3. Yuan, Dongdong & Jiang, Wei & Sha, Aimin & Xiao, Jingjing & Wu, Wangjie & Wang, Teng, 2023. "Technology method and functional characteristics of road thermoelectric generator system based on Seebeck effect," Applied Energy, Elsevier, vol. 331(C).
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