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    Volume 50, Issue 1 (August 2021)

    Aging Resistances Evaluation of Multi-dimensional Nanomaterials Modified Asphalt by Characterizing Binders Recovered from Aged Asphalt Mixtures

    (Received 19 February 2021; accepted 15 June 2021)

    Published Online: 26 August 2021

    CODEN: JTEVAB

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    Abstract

    In terms of the aging susceptibility of asphalt, the multi-dimensional nanomaterials (MDNMs) have been developed to improve the aging resistance of asphalt. In comparison with most of previous studies that are only based on asphalt binder aging simulation methods to evaluate anti-aging properties of MDNMs modified asphalt, aging resistances of MDNM-modified asphalt were evaluated in this research by extracting and recovering binders from their aged asphalt mixtures and then characterizing the aging degree of the extracted binders in terms of physical, rheological, and chemical properties. Organic expanded vermiculite (OEVMT) and nanoparticles (nano zinc oxide [ZnO], nano titanium dioxide [TiO2], and nano silica [SiO2]) were chosen to compose three kinds of MDNMs. And six types of aging patterns (including mixing aging [MA], short-term aging [STA], compacted and loose long-term aging [CLTA and LLTA], and compacted and loose ultraviolet (UV) aging [CUVA and LUVA]) for asphalt mixtures were conducted. The results indicate that the ranking of aging degree for the six types of aging patterns is LUVA > LLTA > CUVA > CLTA > STA > MA. Regardless of the types of asphalt mixture aging patterns, the aging resistances of extracted MDNM-modified asphalt binders are all better than extracted pure asphalt binder, and the composite form of OEVMT combined with ZnO presents more significant improvements on asphalt aging resistance than the other two composite forms (OEVMT + SiO2 and OEVMT + TiO2).

    Author Information:

    Huang, Hongming
    School of Traffic and Transportation Engineering, Changsha University of Science & Technology, Changsha

    Foshan Transportation Science and Technology Co., Ltd., Foshan

    Chen, Zihao
    Key Laboratory for Green & Advanced Civil Engineering Materials and Application Technology of Hunan Province, College of Civil Engineering, Hunan University, Changsha

    Li, Juechi
    Foshan Transportation Science and Technology Co., Ltd., Foshan

    Wang, Junzhuo
    Key Laboratory for Green & Advanced Civil Engineering Materials and Application Technology of Hunan Province, College of Civil Engineering, Hunan University, Changsha

    Ding, Siyin
    Foshan Transportation Science and Technology Co., Ltd., Foshan

    Zhang, Henglong
    Key Laboratory for Green & Advanced Civil Engineering Materials and Application Technology of Hunan Province, College of Civil Engineering, Hunan University, Changsha

    Wu, Chaofan
    Hunan Provincial Engineering Research Center for Construction Solid Wastes Recycling, Hunan Yunzhong Recycling Technology Co., Ltd, Changsha


    Stock #: JTE20210117

    ISSN:0090-3973

    DOI: 10.1520/JTE20210117

    Author
    Title Aging Resistances Evaluation of Multi-dimensional Nanomaterials Modified Asphalt by Characterizing Binders Recovered from Aged Asphalt Mixtures
    Symposium ,
    Committee D04