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细集料的棱角性对沥青混合料的设计和性能有重要影响,本文通过室内试验对AASHTO TP33 A法、我国规范T0344和T0345(12 mm和16 mm孔径)等细集料棱角性的测定方法的相关性、适用性及我国规范中的标准进行了分析。两因素ANOVA分析表明AASHTO TP33 A法和我国T0344方法存在显著不同,AASHTO TP33A法得到的结果偏大。通过和Superpave细集料棱角性要求比较,表明我国目前规范中棱角性指标要求偏低。除了AASHTO TP33 A法和我国T0344方法之外,其他试验方法实测数据之间的相关性都较差。
The angularity of the fine aggregate has an important influence on the design and performance of the asphalt mixture. In this paper, AASHTO TP33 A method, the determination method of the angularity of fine aggregate such as T0344 and T0345 (12 mm and 16 mm diameter) The relevance, applicability and the standards in our country were analyzed. Two-way ANOVA analysis showed that AASHTO TP33 A method and T0344 method of our country there is a significant difference, AASHTO TP33A method results are large. By comparing with the superpave fine aggregate angularity requirements, it shows that the current China’s current specifications of the angularity indicators are low. In addition to the AASHTO TP33 A method and our T0344 method, the correlation between the measured data of other test methods is poor.