According to the characteristics of composition design research for pavement structure anti-cracking material and the shortage of the existing research, based on ShaQingLin academician new SAC gradation design method, determined the coarse and fine aggregate boundary mesh of anti-cracking layer material is2.36 mm, developed a gradation design method for anti-crack material, and designed a set of reasonable distribution; adopted the optimized mathematical calculation method of anti-crack material optimal asphalt content, analysied the optima...