摘要
基于缓裂沥青混合料(CAM)的设计理论,设计了两组不同级配的混合料。为评价沥青混合料的抗裂性能,通过分析路面裂缝类型,设计了一种预切口小梁的弯曲疲劳试验,采用低温小梁弯曲试验验证了此试验方法。结果表明,两种试验方法所得结论相同,且预切口小梁的弯曲疲劳试验中不同级配的混合料结果差异显著。通过对破坏应变、破坏强度、弯曲应变能临界值和弯曲疲劳次数这4种评价指标的比较分析,从中找出最佳的评价指标。
Three different types of asphalt mixtures are designed according to the theory of CAM.To evaluate the anti-cracking performance,fatigue test of notched beam of asphalt mixture is proposed by analyzing the types of asphalt pavement fractures.In order to proving the availability of this method,bending test is conducted.The results show that the proposed method is effective.Through the comparative analysis of failure strain,failure stress,bending strain energy and fatigue life,an optimum method is chosen.
出处
《公路工程》
2011年第6期134-137,148,共5页
Highway Engineering
关键词
沥青混合料
缓裂沥青混合料
抗裂性能
预切口沥青混合料小梁
疲劳试验
asphalt mixture
crack attenuation mixture（CAM）
anti-cracking performance
notched beam of asphalt mixture
fatigue test
