柔性基层沥青混合料配合比设计研究

Research on asphalt mixtures mix design for flexible base

针对柔性基层这一特殊层位进行了系统的配合比设计研究,结合实际给出了5种沥青混合料的级配范围,通过马歇尔试验,按照现行规范的流程,分别确定出各级配的最佳油石比。并依据柔性基层抗车辙和抗水损坏能力的需要,对其进行了相应的性能验证试验,结果表明各级配沥青混合料均能很好满足相关规范的要求。

Systematic mix design was conducted for the special layer flexible base, the grades of five kinds of asphalt mixtures were given. Through Marshall test, the optimal oil-stone ratio of each grade was determined in accordance with the process of the existing specifications. Considering the need of anti-distortion capacity and anti water-damage capacity for the flexible base, performance verification tests were carried out, and the test results show that the asphalt mixtures with each grade can he good to meet the requirements of relevant specifications.