采用贝雷法设计了0.6、0.7、0.8、0.9 四种不同CA比的ATB—30 沥青混合料，并应用于高 速公路路面下面层。为了易于在施工中压实以达到节能减排的目的，同时确保在运营时具有良好 的抗变形能力以减少车辙的产生，通过SGC仪旋转压实成型试件，采用密实曲线斜率（K1、K2） 和能量指数（CEI、TDI） 分析其压实特性，得出CA=0.8 时，ATB—30 具有最优的压实特性。通 过室内小梁弯曲疲劳试验，应用Weibull 概率分布，建立并分析了不同可靠度下的P-S-N和P-s-N 疲劳预估等效方程，得出采用贝雷法设计的级配其混合料的疲劳特性优于规范中值和Superpave 设计方法，同样得出CA=0.8 的4#级配具有最好的抗疲劳特性，表明ATB—30 的压实特性与抗疲 劳性能具有良好的一致性。推荐ATB—30 级配设计中CA比采用0.8，以实现在施工时易于压实， 开放交通后不易产生变形并且具有良好的抗疲劳性能的目的。

Four kinds of ATB—30 (Asphalt-Treated Base-30) mixture with different CA (Coarse Ag⁃ gregate) ratios (0.6, 0.7, 0.8, and 0.9) were designed through Bailey Method, which were used in the bot⁃ tom layer of asphalt pavement in freeway. In order to compact easily in the construction for realizing en⁃ ergy conservation and emission reduction, and to achieve good deformation resistance for decreasing the ruts during the operation of high grade highway, the dense slopes of curves （K1, K2） and energy indexes (CEI (Compactness Energy Index), TDI(Traffic Dense Index) ) were used to analyze the compaction char⁃ acteristics of ATB—30 by SGC molded specimens. And it was concluded that ATB—30 has the best compaction characteristics when CA=0.8. The indoor bending fatigue test of small beam and Weibull probability distribution were applied to establish and analyze the P-S-N & P-s-N fatigue equivalent estimated equations under different reliabilities. It is proved that the fatigue property of mixture with gra⁃ dation designed by Bailey Method is superior to mixture with the standard median gradation or gradation designed by Superpave Method. It also denotes that gradation 4# (CA=0.8) has the best anti-fatigue property, which indicates that ATB—30 has a good consistency between compaction characteristics and antifatigue properties. It recommends CA=0.8 in ATB—30 grade design, so as to achieve easy compaction during construction, and be easy to open to traffic after deformation and has good fatigue resistance.