岩沥青改性沥青混合料的抗老化性能  

Anti-aging Performance of Rock Asphalt Modified Asphalt Mixture

作　　者：唐金明 TANG Jin ruing(Zhumadian Highway Engineering Development Co. , Ltd. , Zhumadian 463000, Henan, China)

机构地区：[1]驻马店市公路工程开发有限公司,河南驻马店463000

出　　处：《筑路机械与施工机械化》2018年第8期51-54,共4页Road Machinery & Construction Mechanization

摘　　要：为了研究岩沥青在长期路面负载的作用下的老化现象,采用熔融共混的方法制备不同岩沥青掺量的岩沥青改性沥青,并进行AC-13沥青混合料配合比设计。对沥青混合料进行短期热氧老化和紫外老化试验,对老化前后沥青混合料的单轴压缩弹性模量进行测试。结果表明:热氧老化和紫外老化后,岩沥青改性沥青混合料的抗压强度和单轴压缩弹性模量的增长幅度均小于基质沥青混合料;岩沥青能够提高沥青混合料的抗热氧老化和抗紫外老化性能,且随着岩沥青掺量的增大,提高效果进一步增大。In order to study the aging of rock asphalt under the action of long-term road load,preparation of rock asphalt modified asphalt mixture with different rock asphalt content was conducted by melt blending,and mix design of AC-13 asphalt mixture was carried out.The short-term thermal aging and ultraviolet aging tests were carried out on the asphalt mixture,and the uniaxial compressive elastic modulus of the asphalt mixture before and after aging was tested.The results show that after thermal aging and UV aging,the compressive strength and uniaxial compressive elastic modulus of rock asphalt modified asphalt mixture are less than those of matrix asphalt mixture;rock asphalt can improve the resistance to thermal aging and UV aging of asphalt mixture,and the effect grows with the increase of rock asphalt content.

关 键 词：岩沥青改性沥青 单轴压缩弹性模量 热氧老化 紫外老化 

分 类 号：U414.01[交通运输工程—道路与铁道工程]