Analysis of the Ultraviolet Aging of SBR M odified Asphalt Mixture

Abstract

Abstract: The illumination aging contrastive test of the hot asphalt mixture is introduced on the condition of scattered pavement by using ultraviolet hish-pressure mercury lamps，which simulates the aging circs ofthe hot asphalt mixture illuminated outside in Tibet.The changes of cleavage strength of SBR modified asphalt mixture and base asphalt mixture can reflect the rule that the asphalt mixture changes with time by using ultraviolet aging at diferent time.The test validates that SBR medifled asphalt mixture has beter capability to withstand ultraviolet aging.It shows that SBR modified asphalt mixture pogges~ beter road property in Tibet.

Key words: road, SBR modified asphalt, ultraviolet aging, cleavage strength

摘要： 介绍了在室内使用紫外线高压汞灯在散铺情况下对热拌沥青混合料进行光照老化对比实验。用此模拟热拌沥青混合料在西藏地区室外光照下老化情况.试验中利用不同时照的紫外线老化。SBR改性沥青混和料与基质沥青混合料的劈裂强度变化，反映出沥青混合料随时间变化的规律.试验中改性沥青混合料表现出更好的抗紫外线老化性.说明在西藏地区使用改性沥青具有更好的路用性能.

关键词: 道路, SBR改性沥青, 紫外线老化, 劈裂强度

CLC Number:

U416
U414

WU Huan;LIANG Nai-xing. Analysis of the Ultraviolet Aging of SBR M odified Asphalt Mixture[J]. Journal of Chongqing Jiaotong University(Natural Science), 2007, 26(2): 72-74.

吴欢，梁乃兴. SBR改性沥青混合料紫外光照老化分析[J]. 重庆交通大学学报（自然科学版）, 2007, 26(2): 72-74.

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Analysis of the Ultraviolet Aging of SBR M odified Asphalt Mixture

SBR改性沥青混合料紫外光照老化分析

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