摘要
选用6种沥青及3个温度区间,研究了沥青在低温区、中温区、高温区的温度敏感性能,借助弯曲梁流变仪、动态剪切流变仪、布氏旋转粘度计,分别对各个温度区间的沥青温度敏感性能进行试验、分析。结果表明:选用低温模量指数表征低温区沥青的温度敏感性优势明显,选用中温模量指数作为中温区温度敏感性评价指标优势明显,选用粘温曲线斜率n作为高温区温度敏感性评价指标较为合理。
Six kinds of asphalt and three kinds of temperature intervals are selected to study the temperature sensitivity of asphalt in low, medium and high temperature zones. With the help of bending beam rheometer, dynamic shear rheometer and Brinell rotating viscometer, the temperature sensitivity of asphalt in each temperature interval is respectively tested and analyzed. The results show that: the low temperature modulus index has obvious advantages in characterizing the temperature sensitivity of asphalt in low temperature zone, the medium temperature modulus index has obvious advantages in evaluating the temperature sensitivity of asphalt in medium temperature zone, and the slope of viscous-temperature curve n is more reasonable in evaluating the temperature sensitivity of asphalt in high temperature zone.
作者
张宏宇
ZHANG Hong-yu(Shanxi Transportation Construction Engineering Quality Inspection Center (Ltd.), Taiyuan 030032,China)
出处
《北方交通》
2019年第7期56-59,共4页
Northern Communications
基金
山西省交通控股集团科研计划项目(18-JKKJ-12)
关键词
道路工程
沥青温度敏感性
不同温度区间
评价指标
Road engineering
Asphalt temperature sensitivity
Different temperature intervals
Evaluation index
