强紫外光辐射地区的沥青混合料组成设计研究  

Research on the Mix Proportion Design of Asphalt Mixture in Strong Ultraviolet Radiation Region

作　　者：李惠霞[1] 任萍[1] 童申家[2] 

机构地区：[1]河南城建学院交通工程系,河南平顶山467000 [2]西安建筑科技大学土木工程学院,陕西西安710055

出　　处：《公路工程》2015年第1期166-169,共4页Highway Engineering

摘　　要：提出强紫外光辐射地区的沥青混合料材料设计设计方法,为该地区沥青路面的抗紫外光老化提供设计依据。采用AC-16的3种不同级配类型,通过马歇尔试验分别确定其最佳油石比。采用自制的紫外光老化实验箱,对不同级配的AC-16沥青混合料进行197 h(相当于自然光照4个月)的紫外光老化。对老化后的沥青混合料试件进行高温稳定性、低温抗裂性和回弹模量试验。得到结论是:AC-16S1高温稳定性较好,适宜于高温的强紫外光辐射地区,AC-16S0低温抗裂性好,适宜于低温的强紫外光辐射地区。Put forward the asphalt mixture design method of material design in strong ultraviolet radiation region and provide reference to asphalt design for anti-ultraviolet aging. This paper adopts three different gradation type of AC-16,at the same level determined the optimum proportion by the Marshall test. Using self-made ultraviolet aging experiment box, make different gradation of AC- 16 197 hours（4 months natural illumination）ultraviolet aging. For aging asphalt mixture specimen, test their high temperature stability,low temperature crack resistance and resilience modulus. The result show that AC-16S1 is suitable for high temperature, strong ultraviolet radiation region for its good high temperature stability and AC- 16S0 is suitable for low temperature of the strong ultraviolet radiation region for its good low temperature crack resistance.

关 键 词：沥青混合料 紫外光老化 高温稳定性 低温抗裂性 回弹模量 

分 类 号：U414.1[交通运输工程—道路与铁道工程]