Mg-Al LDHs改性沥青的制备与抗老化性能研究  

Preparation and Anti-aging Properties of Mg-Al LDHs Modified Bitumen

作　　者：吴伟飞 李玉环 徐松[1] 时敬涛 田翠芳 余剑英[1] 

机构地区：[1]武汉理工大学硅酸盐建筑材料国家重点实验室,武汉430070 [2]中油燃料油青岛技术研发中心,青岛266500

出　　处：《武汉理工大学学报》2014年第4期1-5,共5页Journal of Wuhan University of Technology

基　　金：国家"973"重点基础研究发展计划(2014CB932104);"十二五"国家科技支撑计划(2011BAE28B04)

摘　　要：将镁铝基层状双氢氧化物(Mg-Al LDHs)与基质沥青熔融共混,制备了Mg-Al LDHs改性沥青。采用薄膜烘箱试验(TFOT)和紫外光老化试验分别研究了不同掺量的Mg-Al LDHs对沥青短期热氧老化和紫外光老化性能的影响。结果表明,Mg-Al LDHs可有效抑制沥青在TFOT和紫外光老化过程中软化点和粘度的增加,显著提高沥青延度保留率,减小其质量变化,有效改善了沥青抗短期热氧老化和紫外光老化性能。Mg-Al layer double hydroxides（Mg-Al LDHs） modified bitumen was prepared by melt blending. Anti-aging properties of Mg-Al LDHs modified bitumen were investigated by thin film oven test （TFOT） and ultraviolet （UV） aging test. The experimental results show that Mg-Al LDHs can effectively suppress the increases of softening point and viscosity, and enhance the ductility retained ratio of bitumen after TFOT and UV aging. The quality change in aging procedure also decreass, which indicates that Mg-Al LDHs can improve the ability of bitumen to resist thermal oxidative aging and UV aging.

关 键 词：LDHS 沥青 热氧老化 紫外老化 

分 类 号：U414.75[交通运输工程—道路与铁道工程]