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从集料的加工特性来分析针片状颗粒产生的原因,以及针片状颗粒含量对沥青混合料在施工和使用过程中的影响,主要从集料压碎值、沥青混合料抗剪强度、高温稳定性、水稳定性等几个方面进行研究。结果表明,针片状颗粒含量对混合料性能的影Ⅱ向比较大,针片状颗粒容易断裂、混合料不容易压实、骨架结构的抗车辙能力下降、水稳性下降,因此应该严格控制针片状颗粒的含量。
From the processing characteristics of aggregates to analyze the causes of needle-like particles, as well as the needle-like particles content of asphalt mixture in the construction and use of the process, mainly from aggregate crushing value, asphalt mixture shear strength, High temperature stability, water stability and several other aspects of research. The results show that the needle-like particles content of the mixture performance of more than Ⅱ shadow, needle-like particles easy to fracture, the mixture is not easy to compaction, the framework of the rutting resistance decreased ability to reduce water stability, it should be strictly controlled Needle-like particles content.