摘要
为研究矿料级配变化对沥青混合料压实特性的影响,对8种沥青混合料级配进行旋转压实试验。采用偏最小二乘法分析贝雷法参数对密实能指数CEI和CEI96的影响,优化LC-16的级配。研究结果表明:贝雷法参数CA值对密实能指数影响最大,LC-16E的密实能指数CEI与CEI96的推荐值分别为22.86和220.42,经过26次旋转压实后的平均空隙率为3.888%,由斜率法可得出LC-16E的平均斜率为0.372,该级配优化的路用性能满足规范要求。
In order to explore the effect of aggregate gradation on compaction characteristic of asphalt mixture,gyration compaction tests were conducted out on eight asphalt mixtures gradation.The partial least squares method was adopted to analyze the influence of the Bailey method parameter on the construction energy index(CEI)and the CEI96.The LC-16 grade was then optimized.The results show that the parameter CA of Bailey method has the maximum influence on the construction energy index.The recommended values of CEI and CEI96 for the LC-16E are 22.86 and 220.42 respectively.The average void ratio is 3.888%by 26 times of gyratory compaction test.The average gradient is 0.372resulting from gradient method.The pavement performance can meet the specification requirement.
作者
关宏信
李铭哲
曾勇
李兵
GUAN Hongxin;LI Mingzhe;ZENG Yong;LI Bing(School of Traffic and Transportation Engineering,Changsha University of Science&Technology,Changsha 410114,China;Guangxi Communications Design Group Co.,Ltd.,Nanning 530012,China;Foshan highway&bridge construction Co.,Ltd.,Foshan 528042,China)
出处
《交通科学与工程》
2022年第2期1-6,共6页
Journal of Transport Science and Engineering
基金
国家自然科学基金项目(52078062)
湖南省自然科学基金项目(2020JJ4604)
湖南省交通运输地方标准制修订项目(B201806)。
关键词
道路工程
沥青混合料
压实特性
级配优化
贝雷法
密实能指数
road engineering
asphalt mixture
compaction property
graded optimization
Bailey method
construction energy index
