Abstract: Firstly,the best composition of the lime-fly ash mortar is determined by the orthogonal study,based on many indoor experiments and theoretical analysis;secondly,the rate of voids in the mixed aggregates is gained by the method of vibrating test,in which the optimal gradation of coarse aggregates is got.At last,the suited ratio of coarse aggregates to ash-fly mortar is determined by the volume method.Through the computation and experiment,the design of mix ratio of lime-fly ash stabilization macadam based on anti-crack performance is proposed.Through the research on the pavement behavior and performance of anti-crack lime-fly ash stabilization macadam,including the mechanical performance,anti-brushing performance and anti-crack performance,it proves that lime-fly ash stabilization macadam determined by this method has higher strength ratio and better anti-cracking performance.

Key words: lime-fly ash stabilized macadam, mix ratio, the orthogonal design, skeleton-density, anti-crack performance

摘要： 通过正交试验方法确定了二灰砂浆的最佳材料组成比例,根据振实试验得到了二灰稳定碎石混合料中粗集料的最佳级配,运用体积法确定了粗集料与二灰砂浆的合理配比,提出了计算与试验相结合的基于抗裂性能的二灰稳定碎石配合比设计方法;并通过性能试验,验证了该设计方法确定的二灰稳定碎石具有抗裂性能好、强度增长率高的优点。

关键词: 二灰碎石, 配合比, 正交试验, 骨架密实, 抗裂性能