中文摘要：

沥青混合料耐疲劳性能是影响沥青路面使用寿命的关键因素。对AC-13、AC-20、ATB-25三种类型沥青混合料试件进行常应力三分点小梁弯曲疲劳试验,分析温度、加载频率、级配类型等对沥青混合料疲劳性能的影响规律。研究表明：密实型沥青混合料由于含有较多的沥青胶结料,其疲劳性能一般较嵌挤型沥青混合料更好;施加相同应力时,低温条件下沥青混合料的疲劳寿命较高温条件下高;而同一应力比时,高温条件下沥青混合料的疲劳寿命较低温条件下高;较低加载频率对沥青混合料的疲劳寿命影响更为显著。

英文摘要：

Fatigue performance of asphalt mixtures is a key influence factor to service life of asphalt pavement.Through the third-point flexure fatigue tests of controlled-stress mode conducted to three types of asphalt mixtures（AC-13,AC-20,ATB-25）,the rule of effect of test temperature,loading frequency and aggregate gradation on fatigue performance of mixture is analyzed.The research shows：the fatigue performance of compacting asphalt mixture is better than embedded asphalt mixture because compacting asphalt mixture contains more asphalt cementing materials;under the same quantitative loading,the fatigue life of asphalt mixture in lower temperature is longer than that in higher temperature;the fatigue life of asphalt mixture in lower temperature is shorter than that in higher temperature with the same stress ratio;the effect of lower loading frequency on the fatigue life of asphalt mixture is more remarkable.