纵观国内已建半刚性基层沥青路面的使用状况,半刚性基层开裂现象非常严重,已成为其致命的弱点。因此,如何改善半刚性基层抗裂性能,是混合料组成设计的首要任务。水泥粉煤灰碎石混合料也不例外,其组成设计主要解决的是在保证强度满足要求的前提下,使混合料具有最优抗裂性能的集料级配问题和结合料(包括水泥粉煤灰)用量问题。本文在分析抗裂机理的基础上,重点讨论水泥粉煤灰碎石级配问题,提出了骨架密实结构水泥粉煤灰稳定碎石的组成设计方法,并对此进行了性能检验。从其材料组成来看,碎石是水泥粉 Looking at the use of semi-rigid base asphalt pavement has been built, the phenomenon of semi-rigid base cracking is very serious, has become a fatal weakness. Therefore, how to improve the crack resistance of semi-rigid base is the most important task in the design of mixture. Cement fly ash gravel mix is ​​no exception, the main component of the design is to solve the problem is to ensure the strength to meet the requirements of the premise, so that the mixture has the best anti-cracking performance aggregate gradation problems and binder (including cement powder Ash) the amount of problems. Based on the analysis of anti-cracking mechanism, this paper focuses on the grading of cement-fly ash-gravel. The composition design method of cement-fly ash stabilized macadam is proposed and the performance test is carried out. From its material composition point of view, the gravel is cement powder