细集料分档对MA浇注式沥青混凝土路用性能影响

The Influence of Fine Aggregate Grading to Pavement Performance of MA Asphalt Concrete

为了研究细集料分档对MA浇注式沥青混凝土施工的和易性与路用性能的影响,针对细集料分档和不分档分别拌制浇注式沥青混凝土,以流动度、硬度、冲击韧性作为评价指标,研究细集料分档对其施工和易性和路用性能的影响。研究结果表明:细集料分档的浇注式沥青混凝土的流动度值、硬度值小于不分档的,而冲击韧性值大于不分档的;细集料分档的浇注式沥青混凝土的流动性、高温性能、疲劳性能均优于不分档的。其研究结果可供MA浇注式沥青铺装参考。

To study the influence of fine aggregate grading on construction workability and pavement performance of MA asphalt concrete,an evaluation of fluidity,hardness,impact toughness is performed on MA asphalt concrete with fine aggregate grading and un-grading.The research results show that the fluidity and hardness of MA asphalt concrete with the fine aggregate grading is less than that with fine aggregate un-grading,the impact toughness of MA asphalt concrete with the fine aggregate grading is higher than that with fine aggregate un-grading,high temperature performance and fatigue performance of MA guss asphalt concrete with fine aggregate grading are superior to that with fine aggregate un-grading.The results provide reference for pavement projects of MA asphalt concrete.