| 高寒地区光老化对沥青混合料低温性能影响 |
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| 引用本文： | 郭韦韦,张祖棠.高寒地区光老化对沥青混合料低温性能影响[J].重庆交通大学学报(自然科学版),2012(1):51-53,58. |
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| 作者姓名： | 郭韦韦 张祖棠 |
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| 作者单位： | 同济大学交通运输工程学院;重庆交通大学土木建筑学院 |
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| 摘 要： | 针对我国高寒地区低温及光照辐射强的气候特点,采用氙灯老化箱模拟沥青混合料所受光照作用,对沥青混合料进行人工加速光老化。通过劈裂试验、小梁弯曲试验、低温收缩试验,研究不同时照的光老化对沥青混合料的低温性能影响程度。实验结果表明,经历一定年限的光老化会对基质沥青混合料的低温性能产生显著的影响,而用SBR添加剂能有效防治混合料的光老化,改善混合料的低温性能,为高寒地区沥青路面选择合适的沥青材料和光老化研究提供参考。
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| 关 键 词： | 高寒地区 SBR添加剂 沥青混合料 光老化 低温性能 |
Influence of Ray Aging on Low Temperature Performance of Asphalt Mixture in Plateau-Cold Region |
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| Guo Weiwei,Zhang Zutang.Influence of Ray Aging on Low Temperature Performance of Asphalt Mixture in Plateau-Cold Region[J].Journal of Chongqing Jiaotong University,2012(1):51-53,58. |
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| Authors: | Guo Weiwei Zhang Zutang |
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| Institution: | 1.School of Traffic & Transportation Engineering,Tongji University,Shanghai 201804,China; 2.School of Civil Engineering & Architecture,Chongqing Jiaotong University,Chongqing 400074,China) |
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| Abstract: | Aiming at low temperature and strong radiation of sunlight in plateau-cold region,Xenon lamp was used to simulate the sunlight effect on asphalt mixture in order to accelerate ray aging test on these asphalt mixture.Through splitting test,beam bending test and linear contractive test for bituminous specimen,the low temperature performance of asphalt mixture under different test-time of ray aging was studied.Test results show that the influence on basic asphalt mixture is significant when experienced certain time ray aging,while the additive of SBR can improve ray aging resistance and crack resistance of asphalt mixture at low temperature effectively.The research results can be reference for selection of suitable asphalt binder and study on ray aging in plateau-cold region. |
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| Keywords: | plateau-cold region SBR asphalt mixture ray aging low temperature performance |
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