探讨了二灰碎石混合料在道路工程应用中存在的问题,包括配合比设计方法、级配问题、施工质量控制等等,提出了相应的解决办法和研究方向。提出二灰碎石混合料的设计新方法,建议在二灰碎石混合料设计中增加水稳定性和抗冻融指标,将与沥青混合料有关的最大密度、空隙率等指标引入二灰碎石混合料的质量控制中,以确保二灰碎石混合料的工程质量。 The problems existing in the application of lime-fly ash gravel in road engineering are discussed, including the design method of mixing ratio, grading problem, construction quality control and so on, and the corresponding solutions and research directions are put forward. Proposed a new design method of lime-fly ash gravel mixture. It is suggested to add water stability and anti-freeze-thaw resistance index in the design of lime-fly ash gravel mixture. The maximum density and porosity related to asphalt mixture should be introduced into the ash- Stone mixture quality control, to ensure the quality of lime-fly ash mixture.