湿热地区沥青混合料配合比设计研究

Study on Design of Asphalt Mixture Mixing Ratio in Warm Wet Area

针对我国南方湿热多雨的气候条件,通过采用贝雷法对连续密级配沥青混合料进行矿料级配设计和检验,提出了与之相应的贝雷法检验指标适用范围。研究表明,采用贝雷法对连续密级配沥青混合料进行设计,可使矿料级配达到骨架密实结构的效果,具有良好的抗永久变形能力和抗水损害能力,并较好地改善了沥青路面施工中的级配离析问题和压实度不足问题,满足了湿热地区对沥青路面的性能要求。

Targeting at humid and rainy weather conditions in Southem China, this paper introduces carrying out mineral aggregate gradation design and inspection to continuous dense gradation asphalt mixture with Bailey method. Results show that design continuous dense gradation asphalt mixture with Bailey method offers mineral aggregate gradation the effect of framework dense structure, which has good anti - permanent deformation capa- bility and anti - water damage capability, it has relatively well meliorate the gradation segregation problem and inadequate compaction problem in asphalt pavement construction and it may well satisfy the performance demand for asphalt pavement in warm wet area.