| 沥青混合料老化后的低温性能 |
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| 引用本文： | 陈华鑫,姜艺,李硕,张洪亮.沥青混合料老化后的低温性能[J].长安大学学报(自然科学版),2010(1). |
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| 作者姓名： | 陈华鑫 姜艺 李硕 张洪亮 |
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| 作者单位： | 长安大学特殊地区公路工程教育部重点实验室;普度大学技术学院;印第安那州交通厅公路研究所; |
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| 基金项目： | 国家自然科学基金项目(50608007); 国家西部交通建设科技项目(200131800038) |
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| 摘 要： | 沥青路面的耐久性与沥青混合料抗老化性能密切相关。为了研究老化对沥青混合料低温性能的影响,通过对2种级配的基质沥青和改性沥青混合料老化后的低温弯曲试验,分析了老化作用对其低温性能的影响。结果表明:细级配混合料低温性能要优于粗级配混合料,但老化后弯拉应变衰减幅度大;改性沥青混合料的低温性能好于基质沥青混合料,且其老化后弯拉应变衰减幅度也较小;长期老化对沥青混合料低温性能的影响最严重。建议在沥青混合料低温性能评价中应考虑老化作用的影响。
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| 关 键 词： | 道路工程 沥青混合料 短期老化 长期老化 低温弯曲试验 |
Low-temperature properties of aged asphalt mixtures |
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| CHEN Hua-xin,JIANG Yi,LI Shuo,ZHANG Hong-liang.Low-temperature properties of aged asphalt mixtures[J].JOurnal of Chang’an University:Natural Science Edition,2010(1). |
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| Authors: | CHEN Hua-xin JIANG Yi LI Shuo ZHANG Hong-liang |
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| Institution: | CHEN Hua-xin1,JIANG Yi2,LI Shuo3,ZHANG Hong-liang1(1.Key Laboratory for Special Area Highway Engineering of Ministry of Education,Chang\'an University,Xi\'an 710064,Shaanxi,China,2.School of Technology,Purdue University,West Lafayette 47906,Indiana,USA,3.Research Division of Indiana Department of Transportation,USA) |
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| Abstract: | The durability of asphalt pavement is closely related to the anti-aging properties of asphalt mixtures.In order to study the aging properties of asphalt mixtures on their low-temperature performance,the effects of aging were analyzed based on the low temperature bending test results of aged asphalt mixtures which compose of two particle grading,base asphalt and modified asphalt.The results show that: the low temperature properties of fine grading mixture are superior to the coarse grading mixture,but its be... |
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| Keywords: | road engineering asphalt mixture short-term aging long-term aging low-temperature bending test |
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