SBS和SBR改性沥青混合料抗紫外线老化性能研究  

UV Aging Resistance Capability Studies of SBS and SBR Modified Asphalt Mixture

作　　者：叶昌勇[1] 许达俊 

机构地区：[1]宁波市高等级公路建设指挥部,宁波315000 [2]海南高速公路股份有限公司,海口570203

出　　处：《武汉理工大学学报（交通科学与工程版）》2014年第4期883-886,共4页Journal of Wuhan University of Technology（Transportation Science & Engineering）

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.为了研究紫外线老化作用对沥青混合料力学性能以及高温抗变形能力的影响,通过对相同级配的SBS,SBR和基质沥青混合料紫外老化后进行劈裂试验和车辙试验,分析了经过不同紫外老化时间后3种混合料的劈裂强度和动稳定度的变化规律.结果表明:改性沥青混合料均表现出更好的抗紫外线老化的性能,其中SBS改性沥青混合料效果优于SBR改性沥青混合料.The durability of asphalt pavement is closely related to the anti-aging properties of asphalt mixtures.In order to study the role of UV aging on mechanical properties of asphalt mixtures as well as the impact on high temperature deformation resistance,through the same gradation SBS,SBR and base asphalt splitting test and wheel tracking test after UV aging,the paper analyzed the law between the latter three different UV aging time asphalt mixture and cleavage strength and the variation of the dynamic stability.The results showed that modified asphalt mixture have shown better performance of anti-UV aging,including SBS modified asphalt is better than SBR modified asphalt.

关 键 词：道路工程 改性沥青混合料 紫外线老化 劈裂强度 动稳定度 

分 类 号：U414[交通运输工程—道路与铁道工程]