摘要
通过与国外沥青稳定基层常用级配及国内相关级配的比较,经过大量的马歇尔试验和强度试验,初选出沥青稳定碎石1#(公称粒径26 5mm)和沥青稳定碎石2#(公称粒径31 5mm)两种级配。然后,在MTS810材料试验系统上进行应力控制的疲劳试验,研究其抗疲劳性能,并进行疲劳寿命预估。研究表明这两种沥青混合料的力学性能和疲劳性能较佳,能够用于修筑高速公路的沥青稳定基层。
Through the comparison with the foreign related gradation of asphalt mixtures,the Marshall experiment and the strength experiment,tow kinds of gradations are selected.They are experimented with the fatigue tests of control stress mode using MTS810.By the experiment,a fatigue function between fatigue life-span and the value of repeated stress as the ratio of stress level is set up,and a formula to predict the fatigue life-span is obtained.
出处
《公路交通科技》
CAS
CSCD
北大核心
2005年第1期52-55,65,共5页
Journal of Highway and Transportation Research and Development
基金
交通科技进步通达计划项目资助(2001 15和2003 41)
关键词
高速公路
沥青稳定基层
级配
强度
疲劳
Expressway
Asphalt mixtures base course
Gradations
Strength
Fatigue
