半柔性复合结构综合路用性能及其微观机理研究
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摘要
为了研究沥青灌注式半柔性复合路面中油石比对路用性能的影响,对灌注式半柔性复合路面结构进行高温稳定性能能试验、低温抗裂性能试验和抗水腐蚀性试验,利用灰色关联理论对试验结果进行比较,并通过分子模拟技术对其机理进行分析。结果表明:当油石比为2.7%时,灌注式半柔性复合混合料的性能最佳;根据灰色关联计算结果,油石比对灌注式半柔性复合路面结构的关联度大小依次为相对变形(PRD)、破坏拉伸应变、劈裂强度、劈裂抗拉强度比、劲度模量、综合稳定指数(C);通过分子模拟技术对沥青在不同Connolly半径下的扩散行为进行分析,得出在半柔性路面结构中随着油石比增大,路用性能逐渐增强,当沥青量达到某一范围时,路用性能不再增强。
In order to study the influence of ratio of Whetstone on semi-flexible asphalt perfused composite pavement,the high temperature stability test,low temperature crack resistance test and water corrosion resistance test were done on the inflow semi-flexible composite pavement by gray correlation theory. Meanwhile,the experimental results and its mechanism was analyzed by molecular simulation technique. The results show that the performance of perfusion semi-flexible composite mixture is the best when the asphalt ratio is 2. 7%. According to results of the gray correlation,the strongest correlation between the asphalt ratio and inflow semiflexible composite pavement structure is the relative deformation( PRD). The diffusion behavior of asphalt in different Connolly radii was analyzed by molecular simulation technique. The results show that for semi-flexible composite road,as the asphalt ratio increases,the road performance gradually increases. When the amount of asphalt reaches a certain range,the road performance is no longer enhanced.
In order to study the influence of ratio of Whetstone on semi-flexible asphalt perfused composite pavement,the high temperature stability test,low temperature crack resistance test and water corrosion resistance test were done on the inflow semi-flexible composite pavement by gray correlation theory. Meanwhile,the experimental results and its mechanism was analyzed by molecular simulation technique. The results show that the performance of perfusion semi-flexible composite mixture is the best when the asphalt ratio is 2. 7%. According to results of the gray correlation,the strongest correlation between the asphalt ratio and inflow semiflexible composite pavement structure is the relative deformation( PRD). The diffusion behavior of asphalt in different Connolly radii was analyzed by molecular simulation technique. The results show that for semi-flexible composite road,as the asphalt ratio increases,the road performance gradually increases. When the amount of asphalt reaches a certain range,the road performance is no longer enhanced.
引文
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[9]虎良燕.沥青混合料高温稳定性的灰色关联分析[J].价值工程,2012(14):76-78.HU L Y.Mechanical correlation analysis of high temperature stability of asphalt mixture[J].Value Engineering,2012(14):76-78.
[10]ARTOK L,SU Y,HIROSE Y,et al.Structure and reactivity of petroleum-derived asphaltene[J].Energy&Fuels,1999,13(2):287-296.
[11]KOWALEWSKI I,VANDENBROUCKE M,HUC A Y,et al.Preliminary results on molecular modeling of asphaltenes using structure elucidation programs in conjunction with molecular simulation programs[J].Energy&Fuels,1996,10(1):97-107.
[12]BUNGER J W,LI N C.Chemistry of asphaltenes[M].Washington:American Chemical Society,1982.
[13]STORM D A,EDWARDS J C,DECANIO S J,et al.Molecular representations of Ratawi and Alaska north slope asphaltenes based on liquid-and solid-state NMR[J].Energy&fuels,1994,8(3):561-566.
[2]覃峰,李春.沥青混合料基灌注式半刚性路面抗腐性能研究[J].公路,2015,4(10):28-34.QIN F,LI C.Study on corrosion resistance of asphalt mixture based semi-rigid pavement[J].Highway,2015,4(10):28-34.
[3]覃峰.蔗渣纤维沥青混合料超薄路面层抗腐性能试验研究[J].新型建筑材料,2017(2):10-14.QIN F.Experimental study on corrosion resistance of bagasse fiber asphalt mixture[J].New Building Materials,2017(2):10-14.
[4]中华人民共和国行业标准.JTGE20—2011公路工程沥青及沥青混合料试验规程[S].北京:人民交通出版社,2011.PEOPLE'S REPUBLIC OF CHINA INDUSTRY STANDARD.JTGE20—2011 Highway engineering asphalt and asphalt mixture test procedure[S].Beijing:People's Communications Press,2011.
[5]覃峰.锰渣矿粉沥青混合料抗腐性能研究[J].新型建筑材料,2012(3):43-46.QIN F.Study on corrosion resistance of asphalt mixture of manganese slag powder[J].New Building Materials,2012(3):43-46.
[6]杜顺成,戴经梁.沥青混合料永久变形评价指标[J].中国公路学报,2006(5):18-22.DU S C,DAI J L.Evaluation index of permanent deformation of asphalt mixture[J].Journal of China Highway,2006(5):18-22.
[7]杜顺成.沥青混合料高温稳定性评价指标和级配设计方法研究[D].西安:长安大学,2007.DU S C.Study on high temperature stability evaluation index and gradation design method of asphalt mixture[D].Xi'an:Chang'an University,2007.
[8]郑影.灰色系统理论在沥青混合料组成设计中的应用[D].长春:吉林大学,2007.ZHENG Y.Application of gray system theory in asphalt mixture design[D].Changchun:Jilin University,2007.
[9]虎良燕.沥青混合料高温稳定性的灰色关联分析[J].价值工程,2012(14):76-78.HU L Y.Mechanical correlation analysis of high temperature stability of asphalt mixture[J].Value Engineering,2012(14):76-78.
[10]ARTOK L,SU Y,HIROSE Y,et al.Structure and reactivity of petroleum-derived asphaltene[J].Energy&Fuels,1999,13(2):287-296.
[11]KOWALEWSKI I,VANDENBROUCKE M,HUC A Y,et al.Preliminary results on molecular modeling of asphaltenes using structure elucidation programs in conjunction with molecular simulation programs[J].Energy&Fuels,1996,10(1):97-107.
[12]BUNGER J W,LI N C.Chemistry of asphaltenes[M].Washington:American Chemical Society,1982.
[13]STORM D A,EDWARDS J C,DECANIO S J,et al.Molecular representations of Ratawi and Alaska north slope asphaltenes based on liquid-and solid-state NMR[J].Energy&fuels,1994,8(3):561-566.