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Aging Characteristics of Rubber Modified Bitumen Mixed with Sulfur after Terminal Blend Process

Author

Listed:
  • Sheng Wang

    (Key Laboratory of Road and Traffic Engineering of Ministry of Education, Tongji University, Tongda Building, 4800 Cao’an Road, Shanghai 201804, China)

  • Weidong Huang

    (Key Laboratory of Road and Traffic Engineering of Ministry of Education, Tongji University, Tongda Building, 4800 Cao’an Road, Shanghai 201804, China)

  • Xueyan Liu

    (Section of Pavement Engineering, Department of Engineering Structures, Faculty of Civil Engineering and Geosciences, Delft University of Technology, Stevinweg 1, 2628 CN Delft, The Netherlands)

  • Peng Lin

    (Section of Pavement Engineering, Department of Engineering Structures, Faculty of Civil Engineering and Geosciences, Delft University of Technology, Stevinweg 1, 2628 CN Delft, The Netherlands)

Abstract

The influence of sulfur on the chemical, rheological, and aging resistance of terminal blend rubberized bitumen (TBRB) was studied. TB hybrid bitumen (TBHB) was prepared from with different sulfur contents (0.1, 0.2, 0.3, 0.4 wt%) and TBRB prepared with neat bitumen and crumb rubbers at 20% content. TBHB binders were aged by rolling thin film oven test (RTFOT) and pressure aging vessel (PAV), respectively. The chemical composition of TBHB binders was monitored by attenuated total reflection-Fourier transform infrared spectroscopy (ATR-FTIR). Rheological properties of all TBHB samples were tested. Chemical composition results show that TBHB can inhibit the degradation of polybutadiene compared with TBRB in the RTFOT stage, and the polybutadiene degradation is the main process of TBHB in the RTFOT stage, while the TBHB is mainly desulfurized after PAV aging. Meanwhile, the increase in sulfur content in the TBHB can improve the desulfurization degree of the TBHB binder after PAV. TBRB containing sulfur can improve the mechanical properties and elasticity and reduce the hardening degree during aging. Moreover, blending sulfur into the TBRB caused a lower complex modulus aging index after aging, which indicates that TBHB has superior aging resistance.

Suggested Citation

  • Sheng Wang & Weidong Huang & Xueyan Liu & Peng Lin, 2022. "Aging Characteristics of Rubber Modified Bitumen Mixed with Sulfur after Terminal Blend Process," Sustainability, MDPI, vol. 14(5), pages 1-16, February.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:5:p:2612-:d:757164
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    References listed on IDEAS

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    1. Rosa Veropalumbo & Francesca Russo & Cristina Oreto & Giovanna Giuliana Buonocore & Letizia Verdolotti & Herminio Muiambo & Salvatore Antonio Biancardo & Nunzio Viscione, 2021. "Chemical, Thermal, and Rheological Performance of Asphalt Binder Containing Plastic Waste," Sustainability, MDPI, vol. 13(24), pages 1-21, December.
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    Cited by:

    1. Tamás Bányai & Péter Veres, 2022. "Supply Chain Design for Blending Technologies," Sustainability, MDPI, vol. 14(14), pages 1-21, July.

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