For impact factor of raw materials, the dissertation focuses on the asphalt type, coarse aggregate type and flat and elongated particle content on drainage asphalt mixture performance.
原材料影响因子方面，重点研究了沥青类型、粗集料类型与针片状含量对排水沥青混合料性能的影响。
2
Particle shape, percentage of flat-elongated particles and gradation of coarse aggregate can produce remarkable influence on crushing value.