复合改性沥青混合料塑性变形的影响因素分析
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摘要
沥青混合料塑性变形是沥青路面耐久性的重要组成部分,而影响塑性变形的因素有很多。该研究选用了三种复合改性沥青组成不同复合改性沥青混合料,在不同因素(沥青、集料级配、荷载作用次数、老化时间、试验温度)等影响下,对复合改性沥青混合料的塑性变形进行试验研究。研究表明,4%SBS/15%橡胶粉沥青混合料(AC-20)抗塑性变形能力与高温性能最好,4%SBR/15%橡胶粉沥青混合料(AC-13)最差。利用灰色关联理论对影响复合改性沥青混合料塑性变形的因素进行了评级。
Plastic deformation of asphalt mixture is an important component of asphalt pavement durability, which is affected by many factor. In this study, three kinds of composite modified asphalt were used to form different composite modified asphalt mixtures, whose plastic deformations were analyzed under different influencing factors(Binder, aggregate gradation, loading times, ageing time and test temperature). The research results show that the ability to resist plastic deformation of 4%SBS/15% rubber powder asphalt mixture with AC-20 is the best, and the 4%SBR/15% rubber powder asphalt mixture with AC-13 is the poorest. The various factors influencing plastic deformation of asphalt mixture were evaluated by using grey relational theory.
Plastic deformation of asphalt mixture is an important component of asphalt pavement durability, which is affected by many factor. In this study, three kinds of composite modified asphalt were used to form different composite modified asphalt mixtures, whose plastic deformations were analyzed under different influencing factors(Binder, aggregate gradation, loading times, ageing time and test temperature). The research results show that the ability to resist plastic deformation of 4%SBS/15% rubber powder asphalt mixture with AC-20 is the best, and the 4%SBR/15% rubber powder asphalt mixture with AC-13 is the poorest. The various factors influencing plastic deformation of asphalt mixture were evaluated by using grey relational theory.
引文
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[8]黄卫东,孙立军.SBS改性沥青的混合原理与过程[J].同济大学学报:自然科学版,2002,30(2):189-192(Huang Weidong,Sun Lijun.Mixing principle and procedure of SBS modified asphalt[J].Journal of Tongji University:Natural Science Edition,2002,30(2):189-192(in Chinese))
[2]郭朝阳,何兆益,曹阳.废胎胶粉改性沥青改性机理研究[J].中外公路,2008,28(2):172-176
[3]栗培龙,张争奇,李洪华,等.沥青混合料汉堡车辙试验条件及评价指标研究[J].武汉理工大学学报:交通科学与工程版,2011,35(1):113-117(Li Peilong,Zhang Zhengqi,Li Honghua,et al.Research on conditions of hamburg wheel tracking test and evaluating indicator for asphalt mixture[J].Journal of Wuhan University of Technology:Transportation Science&Engineering,2011,35(1):113-117(in Chinese))
[4]程培峰,李艺铭,李吉庭,等.橡胶沥青老化性能的试验研究[J].新型建筑材料,2017,44(3):144-147(Cheng Peifeng,Li Yiming,Li Jiting,et al.Experimental research on aging properties of rubber asphalt[J].New Building Materials,2017,44(3):144-147(in Chinese))
[5]JTG E20-2011公路工程沥青及沥青混合料试验规范[S].北京:人民交通出版社,2011(JTG E20-2011Standard test methods of bitumen and bituminous mixtures for highway engineering[S].Beijing:China Communications Press,2011(in Chinese))
[6]梁乃兴,李明国.SBS改善沥青路用性能及机理研究[J],长安大学学报:自然科学版,2002,22(2):17-20(Liang Naixing,Li Mingguo.Performance and mechanism of modified asphalt with SBS[J].Journal of Chang'an University:Natural Science Edition,2002,22(2):17-20(in Chinese))
[7]郑南翔,牛思胜,许新权.重载沥青路面车辙预估的温度-轴载-轴次模型[J].中国公路学报,2009,22(3):7-13(Zheng Nanxiang,Niu Sisheng,Xu Xinquan.Temperature,axle load and axle load frequency model of rutting prediction of heavy-duty asphalt pavement[J].China Journal of Highway and Transport,2009,22(3):7-13(in Chinese))
[8]黄卫东,孙立军.SBS改性沥青的混合原理与过程[J].同济大学学报:自然科学版,2002,30(2):189-192(Huang Weidong,Sun Lijun.Mixing principle and procedure of SBS modified asphalt[J].Journal of Tongji University:Natural Science Edition,2002,30(2):189-192(in Chinese))