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 2 6 5mm)和沥青稳定碎石 2 #(公称粒径为31 5mm)两种级配。然后 ,在MTS 810材料试验系统上进行了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 ,能够用于修筑高等级公路的沥青稳定基层。 Through the comparison with the commonly used gradation of asphalt stabilized grassroots abroad and the related grading in China, after a lot of Marshall test and strength test, asphalt stabilized macadam 1 # (nominal particle diameter 26mm) and asphalt stabilized macadam 2 # (Nominal diameter of 31 5mm) two kinds of grading. Then, stress controlled fatigue tests were conducted on the MTS 810 material testing system to investigate its fatigue resistance and to estimate the fatigue life. Research shows that the two asphalt mixtures have better mechanical properties and fatigue properties and can be used to build bitumen stabilized grassroots in high-grade highways.