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为考察路面不同层位处的沥青混合料影响因素的显著性,选取了最大公称粒径分别为13 mm和25 mm 2种混合料来进行对比性分析;在试验手段上进行了适当的改进,基于正交试验方法,采用室内车辙碾压成型和钻心取样相结合的试验方法,分别测定了整块车辙板试件的空隙率和钻心芯样的空隙率,综合分析了影响沥青混合料的级配关键筛孔和显著试验条件。结果表明,对于任一种混合料,针对不同指标的显著影响因素存在较大的不同,而对于给定的混合料的同一个指标,显著影响因素也有较大的差别,这些差异可为混合料的深入研究提供有益的参考价值。
In order to investigate the significance of influencing factors of asphalt mixture on different layers of pavement, two kinds of mixtures with maximum nominal diameter of 13 mm and 25 mm were chosen for comparative analysis. The experimental methods were improved appropriately, Based on the orthogonal test method, the indoor Rutting compaction and core sampling were combined to test the voidage of the whole piece of rutted board and the void content of the core sample. The influence of grade of bituminous mixture With key sieve and significant test conditions. The results show that for any mixture, there are significant differences in the significant influencing factors for different indicators, and for the same indicator of a given mixture, the significant influencing factors are also greatly different. These differences can be found in the mixture In-depth research to provide useful reference value.