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细集料棱角性对沥青混合料的路用性能有重要影响,建立科学的细集料棱角性评价方法和技术标准对于路面集料质量控制尤为重要。文章对比分析了美国AASHTO TP33和我国T0344、T0345等细集料棱角性测定方法,在大量工程实践调研的基础上,文章提出了改进的棱角性测试方法,针对不同的测试方法提出了细集料棱角性的技术要求。根据分析,所提出的测试方法更能反映我国路面工程实际,且具有更好的甄别能力。
The angularity of fine aggregate has an important influence on the road performance of asphalt mixture. Establishing scientific evaluation methods and technical standards for angularity of fine aggregate is particularly important for the quality control of aggregate. Based on a lot of engineering practice and research, the paper presents an improved method of angularity test, aiming at different testing methods, and proposes a method for measuring the angularity of fine aggregates, such as AASHTO TP33, T0344 and T0345 in China. Angular technical requirements. According to the analysis, the proposed test method can better reflect the actual pavement engineering in our country and has better screening ability.