文档介绍:49 6 Vol. 49 No. 6
第 卷第期 d the relationship between the
evaluation parameters. The result shows that the fatigue factor Gsin δ,dissipation energy,and
accumulated dissipation energy are inappropriate to be used as evaluation parameters as they cannot
determine the fatigue life exactly. The other two parameters,Nf50 and Np20 ,however,are suitable to
evaluate the binders fatigue performance. Np20 is about 0. 725 times Nf50 ,and it is suggested using Nf50
to evaluate the fatigue performance of asphalt binders.
Key words: road engineering;high modulus asphalt material;fatigue performance;evaluation
parameter
现行研究中对沥青的评价体系可分为3 类:针 grade)分级. 针入度分级在中等温度下的评价指标
入度分级、粘度分级和基于性能的PG(performance 有针入度和延度,但没有反映疲劳性能的评价指标;
收稿日期:20130510
基金项目:上海市科技委员会资助项目(08201202002,12231205302)
作者简介:孙艳娜(1985 - ),女,博士,研究方向为路面材料与结构,电话:15821636189,Email:sunyanna2006@ 163. com
通讯作者:李立寒(1957 - ),女,教授,研究方向为路面材料与结构,Email:lhli@ tongji. edu. cn
引文格式:孙艳娜,李立寒,汪于凯. 沥青疲劳性能评价指标[J]. 西南交通大学学报,2014,49(6):11021107.