成型方式对SMA沥青混合料路用性能影响研究  

Study on Effect of Molding Method on Pavement Performance of SMA Asphalt Mixture

作　　者：徐晓刚[1] 乔艳妮[2] 

机构地区：[1]西安市政设计研究院有限公司,西安710068 [2]西安工业大学建筑工程学院,西安710032

出　　处：《路基工程》2014年第2期98-101,共4页Subgrade Engineering

摘　　要：分别对细、中、粗3种不同的SMA级配,采用GTM法与马歇尔法进行设计,并对其体积特性参数和路用性能进行了比较研究。结果表明:GTM法设计的试件密度和饱和度较马歇尔法设计的试件大,空隙率和矿料间隙率小,GTM法设计的SMA沥青混合料具有较高的高温稳定性,低温抗裂性和水稳定性。In relation to fine, medium, and coarse SMA gradation, the mixture was designed by GTM and Marshall methods, with comparison studies conducted between the volumetric parameters and pavement performance. The results show that the specimen designed by GTM method has larger density and saturation than the one designed by Marshall method, with smaller porosity and voids in mineral aggregate. Hence the SMA asphalt mixture designed by GTM method has good high-temperature stability, low-temperature crack resistance, and water stability.

关 键 词：SMA沥青混合料 成型方式 路用性能 GTM法 马歇尔法 

分 类 号：U416.217[交通运输工程—道路与铁道工程]