道路沥青耐热老化性能评价  

The Evaluation of the Heat Aging Resistance of Paving Asphalt

作　　者：王翠红[1] 柴志杰[2] 王红[1] 佘玉成[1] 黄婉利[2] 

机构地区：[1]中国石化石油化工科学研究院,北京100083 [2]中国石化炼油销售有限公司,上海200050

出　　处：《石油沥青》2016年第3期1-4,共4页Petroleum Asphalt

摘　　要：选取国内3个有代表性的、25℃针入度在80～100 1/10mm范围内的道路沥青样品为评价对象,按照沥青旋转薄膜烘箱试验法（SH/T 0736-2003）进行热老化性能评价试验,考察老化时间对热老化残余物性质的影响.试验结果表明,所选3个沥青样品的热老化规律是一致的,随着老化时间增加,老化残余物的软化点、脆点逐渐升高,黏度逐渐增大,但是不同沥青样品的耐热老化程度不同,且差别较大.Three representative samples which had the penetration between 80 - 100 （ 1/10 mm） at 25 ℃ had been selected to evaluate the performance of paving asphalt. The influence of time on the aged asphalt was investigated by rolling thin - film oven test （ SH/T 0736 - 2003 ）. The results showed that the thermal age rules of 3 samples were the same. The soft point and breaking point of asphalt went up and the viscosity in- creased with the aging time increased. But the heat aging resistance of different asphalt was different, and the results had respective characteristics.

关 键 词：道路沥青 老化 加热 

分 类 号：U414[交通运输工程—道路与铁道工程]