我国防水材料现状及产品结构预测  

Investigation of the properties of TLA modified asphalt

作　　者：张涛[1] 吴少鹏[1] 王金刚[1] 黄旭[1] ZHANG Tao, WU Shaopeng, WANG Jingang, HUANG Xu （Key Laboratory of Silicate Materials Science and Engineering of Ministry of Education, Wuhan University of Technology, Wuhan 430070, Hubei, China）

机构地区：[1]武汉理工大学硅酸盐材料工程教育部重点实验室,湖北武汉430070

出　　处：《新型建筑材料》2009年第9期58-61,共4页New Building Materials

基　　金：基金项目：西部交通建设科技项目（200631800076）

摘　　要：特立尼达湖沥青（TLA沥青）是世界著名的天然沥青，技术性能指标非常稳定。对基质沥青和TLA改性沥青的常规性能和流变性能进行分析。采用动态剪切流变仪（DSR）进行温度扫描和频率扫描试验，以评价沥青胶结料的流变性能；采用蠕变试验评价其抵抗变形的恢复能力。试验结果表明，TLA改性沥青较基质沥青有更好的高温性能，且TLA沥青掺量对沥青胶结料的性能有重要影响。Trinidad Lake Asphalt （TLA） is a kind of well-known nature asphalt. Its technical performances and indices are stable. The traditional and rheological properties of the virgin asphalt and TLA modified asphalt were evaluated in this paper. Dynamic Shear Rheometer （DSR） temperature sweep test and frequency sweep test were investigated to evaluate the rheological properties of the asphalt binders. Creep test was also conducted to estimate the percent recovery against deformation. Results indicated that TLA modified asphalt binders had more excellent properties at high temperature compared than virgin asphalt and the dosages of TLA additive were vital to their properties.

关 键 词：特立尼达湖改性沥青:动态剪切流变仪(DSR) 流变性能 

分 类 号：U214.75[交通运输工程—道路与铁道工程]