In proportion design of hot mix asphalt (HMA), the aggregate gradation in HMA is one of the most important influencing factors on HMA mechanical behavior. During the process of aggregate compaction, the gradation of the aggregate will change at some extent, namely, the aggregate gradation after compaction will be different from the original design gradation, it will influence the HMA design results. Therefore, study on the variability of aggregate gradation at different compaction conditions has a theoretical and practical value. The objective of the project is to explore the influence of different compacting methods on aggregate gradation between Marshall and Superpave methods. Different compaction methods are used to compact different aggregates, then the variability of aggregate gradation under different compaction conditions is analyzed. The research results have shown that although the method of Superpave gyratory compaction generally has the less influence on aggregate gradation than that of Marshall impacting compaction, the detailed influence on the gradation of coarse, medium and fine aggregates between two methods is different. The findings can provide a technical reference for aggregate gradation in HMA proportion design.

在热拌沥青混合料（HMA）的比例设计中，HMA中的骨料级配是影响HMA力学性能的最重要因素之一。在骨料压实过程中，骨料的等级会有所变化，即压实后的骨料等级与原始设计等级会有所不同，会影响HMA设计结果。因此，研究不同压实条件下骨料级配的变异性具有理论和实用价值。该项目的目的是探讨不同压实方法对马歇尔方法和Superpave方法之间的骨料级配的影响。采用不同的压实方法压实不同的骨料，然后分析了不同压实条件下骨料级配的变化。研究结果表明，尽管Superpave旋回压实方法对集料级配的影响通常要比Marshall冲击压实法小，但两种方法对粗，中，细骨料级配的详细影响却有所不同。研究结果可为HMA比例设计中的总体等级提供技术参考。