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Evaluation of the compatibility between rubber and asphalt based on molecular dynamics simulation

Frontiers of Structural and Civil Engineering 2020年第2期14卷 435-445页

作者： Fucheng GUO Jiupeng ZHANG Jianzhong PEI Weisi MA Zhuang HU Yongsheng GUAN Key Laboratory for Special Area Highway Engineering of Ministry of Education Chang'an UniversityXi'an 710064China Jiangsu Sinoroad Engineering Research Institute Co. LtdNanjing 211806China

Using of rubber asphalt can both promote the recycling of waste tires and improve the performance of asphalt ***,the segregation of rubber asphalt caused by the poor storage stability always appears during its *** stability of asphalt and rubber is related to the compatibility and also influenced by rubber *** this study,molecular models of different rubbers and chemical fractions of asphalt were built to perform the molecular dynamics *** solubility parameter and binding energy between rubber and asphalt were obtained to evaluate the compatibility between rubber and asphalt as well as the influence of rubber content on *** show that all three kinds of rubber are commendably compatible with asphalt,where the compatibility between asphalt and cis-polybutadiene rubber(BR)is the best,followed by styrene-butadiene rubber(SBR),and natural rubber(NR)is the *** optimum rubber contents for BR asphalt,SBR asphalt,and NR asphalt were determined as 15%,15%,and 20%,*** addition,the upper limits of rubber contents were found as between 25%and 30%,between 20%and 25%,and between 25%and 30%,respectively.

关键词： rubber asphalt compatibility rubber content molecular dynamics simulation

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Green Road Construction Technologies in Guangzhou

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Frontiers of Engineering Management 2016年第1期3卷 80-86页

作者： Guan-feng An Wen-yuan Huang Jing-feng Zhang Guangzhou Municipal Engineering Group Shanghai Jiao Tong University

Total road pavement in Guangzhou reaches 77×10~6m^*** huge maintenance and potential rehabilitation calls for a green road *** paper presents a discussion,first about green road construction technologies together with their applications and development like reclaimed asphalt pavement,rubberized asphalt pavement,and warm mix asphalt; and then,about the key obstacles for promotion and activities,primarily for green road promotion,in the perspectives of the current technical and application situations in China and separately in *** on environmental and conditional analysis,as well as a development expectation from an industrial viewpoint,this paper creates a development trend of green road technologies.

关键词： road green construction recycling of waste asphalt rubber asphalt

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