Performance Evaluation of SBS Modified Asphalt with Different Anti-aging Additives

    Volume 40, Issue 5 (September 2012)

    ISSN: 0090-3973

    CODEN: JTEOAD

    Published Online: 1 August 2012

    Page Count: 6


    Feng, Zhengang
    State Key Laboratory of Silicate Materials for Architectures, Wuhan Univ. of Technology, Wuhan,

    Xu, Song
    State Key Laboratory of Silicate Materials for Architectures, Wuhan Univ. of Technology, Wuhan,

    Sun, Yubin
    Center for Materials Research and Analysis, Wuhan Univ. of Technology, Wuhan,

    Yu, Jianying
    State Key Laboratory of Silicate Materials for Architectures, Wuhan Univ. of Technology, Wuhan,

    (Received 7 March 2012; accepted 26 April 2012)

    Abstract

    The effects of three different types of anti-aging additives (bumetrizole, octabenzone, and tinuvin770) on the physical and rheological properties of styrene butadiene styrene (SBS) modified asphalt were investigated by means of conventional physical properties tests and dynamic shear rheometer (DSR) tests. In order to evaluate the aging properties of different anti-aging additive/SBS modified asphalts, the thin film oven test and ultraviolet (UV) radiation test were performed, and different aging parameters were compared. The results show that the penetration, ductility, and softening point are increased, whereas the viscosity is decreased, with the addition of different anti-aging additives. The DSR analysis indicates that anti-aging additives can enhance the elastic behavior and improve the thermal stability of SBS modified asphalt. Improvement in the thermal-oxidative aging properties of SBS modified asphalt can be achieved with the three different anti-aging additives, but the UV aging properties of anti-aging additive/SBS modified asphalts are dependent on the type of anti-aging additive. Of the three different anti-aging additives, tinuvin770 improves both the thermal- and the photo-oxidative aging resistance of SBS modified asphalt significantly.


    Paper ID: JTE20120047

    DOI: 10.1520/JTE20120047

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    Author
    Title Performance Evaluation of SBS Modified Asphalt with Different Anti-aging Additives
    Symposium , 0000-00-00
    Committee D04