摘要
为研究表面活性剂类温拌剂对沥青性能的影响,选取针入度、针入度指数、黏度等指标,对添加表面活性剂类温拌剂Evotherm的SK70#沥青、壳牌70#沥青、兰炼90#沥青性能的变化进行了研究分析。结果表明:温拌剂种类对三种沥青的针入度指标几乎没有影响,壳牌70#沥青针入度指数受温拌剂种类影响较大,在加入Evotherm温拌剂和DAT温拌剂后PI值分别增大0.35和0.66。温拌剂类型对兰炼90#沥青在95℃和115℃下的黏温曲线曲线影响较大,其中DAT温拌剂的降黏效果强于Evotherm温拌剂,加入DAT后兰炼90#沥青黏度分别下降0.438 Pa·s和0.132 Pa·s,随着温度的提升温拌剂的降黏效果不再明显。
In order to study the influence of surfactants on the performance of asphalt,the penetration index,viscosity and other indexes were selected to study the performance of SK 70#asphalt,Shell 70#asphalt and Lan Lian 90#asphalt modified by surfactant warm mix agent Evotherm.The results show that the penetration index of Shell 70#asphalt is greatly affected by the type of temperature mixture,and the PI value increases by 0.35 and 0.66 respectively after the addition of Evotherm and DAT warm mix agent.Meanwhile,the viscosity curve of Lan Lian 90#asphalt at 95℃and 115℃is greatly influenced by the type of warm mix agent,among which the viscosity reduction effect of DAT is stronger than that of Evotherm.After adding DAT,the viscosity of Lan Lian 90#asphalt decreases by 0.438 Pa·s and 0.132 Pa·s respectively,and the viscosity reduction effect of warm mix agent is no longer obvious with the increase of temperature.
作者
贾荷柱
JIA Hezhu(Shanxi Chengda Highway Survey and Design Co.,Ltd.,Shanxi Taiyuan 030006 China)
关键词
道路工程
表面活性剂类温拌剂
温拌沥青
路用性能
highway engineering
surfactant warm mix agent
warm mix asphalt
road performance
