文章通过对水泥稳定碎石基层的裂缝产生原因分析,结合沪宁高速公路扩建工程水稳基层实践,提出通过降低水泥用量、改进混合料级配形式和控制混合料含水量等措施从根本上避免甚至杜绝水稳基层工后收缩裂缝的产生,对同类形改扩建工程有较强的借鉴意义。 Based on the analysis of the causes of cracks in the base course of cement stabilized macadam and the practice of water-stable grass-roots level in the expansion project of Shanghai-Nanjing Expressway, this paper proposes to avoid such problems by reducing the amount of cement, improving the gradation of mixture and controlling the water content of mixture Even put an end to water-based grass-roots shrinkage cracks, the same type of reconstruction project has a strong reference.