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    Molecular Dynamics Simulation to Investigate the Influence of SBS on Molecular Agglomeration Behavior of Asphalt

    Source: Journal of Materials in Civil Engineering:;2015:;Volume ( 027 ):;issue: 008
    Author:
    Yongjie Ding
    ,
    Boming Tang
    ,
    Yuzhen Zhang
    ,
    Jianming Wei
    ,
    Xuejuan Cao
    DOI: 10.1061/(ASCE)MT.1943-5533.0000998
    Publisher: American Society of Civil Engineers
    Abstract: Styrene-butadiene-styrene (SBS) modified asphalt has been used in many road projects for its good performance at high and low temperatures. However, there was no final conclusion whether SBS could change the chemical structure of asphalt binders. The objective of this study was to analyze the impact of SBS on the molecular agglomeration behavior of asphalt binders by means of molecular simulation techniques. Two types of modifiers (SBS, MAH-g-SBS) were added into two asphalt models. Results of simulation show that three types of SBS all have impact on the molecular agglomeration behavior of asphalt binders. The impact of modifiers is largely dependent on the molecular structure of asphaltenes. The molecular agglomeration of asphalt with longer asphaltene alkane side branches is more regular. The agglomeration structure of asphalt molecules is more susceptible to SBS when the asphaltene alkane side branches are longer. The difference of influence on asphalt binders among two types of SBS is small.
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      Molecular Dynamics Simulation to Investigate the Influence of SBS on Molecular Agglomeration Behavior of Asphalt

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    http://yetl.yabesh.ir/yetl1/handle/yetl/76452
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    contributor authorYongjie Ding
    contributor authorBoming Tang
    contributor authorYuzhen Zhang
    contributor authorJianming Wei
    contributor authorXuejuan Cao
    date accessioned2017-05-08T22:17:33Z
    date available2017-05-08T22:17:33Z
    date copyrightAugust 2015
    date issued2015
    identifier other40120944.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/76452
    description abstractStyrene-butadiene-styrene (SBS) modified asphalt has been used in many road projects for its good performance at high and low temperatures. However, there was no final conclusion whether SBS could change the chemical structure of asphalt binders. The objective of this study was to analyze the impact of SBS on the molecular agglomeration behavior of asphalt binders by means of molecular simulation techniques. Two types of modifiers (SBS, MAH-g-SBS) were added into two asphalt models. Results of simulation show that three types of SBS all have impact on the molecular agglomeration behavior of asphalt binders. The impact of modifiers is largely dependent on the molecular structure of asphaltenes. The molecular agglomeration of asphalt with longer asphaltene alkane side branches is more regular. The agglomeration structure of asphalt molecules is more susceptible to SBS when the asphaltene alkane side branches are longer. The difference of influence on asphalt binders among two types of SBS is small.
    publisherAmerican Society of Civil Engineers
    titleMolecular Dynamics Simulation to Investigate the Influence of SBS on Molecular Agglomeration Behavior of Asphalt
    typeJournal Paper
    journal volume27
    journal issue8
    journal titleJournal of Materials in Civil Engineering
    identifier doi10.1061/(ASCE)MT.1943-5533.0000998
    treeJournal of Materials in Civil Engineering:;2015:;Volume ( 027 ):;issue: 008
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
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