本文结合某高速公路建设中对于粉土路基进行改良试验的案例,对采用掺加水泥对粉土路基加以改良,提高粉土路基施工工程质量,确保粉土路基的使用达到施工设计要求,节约高速公路土方运距增加导致的工程造价增加的问题。试验证明,进行粉土改良措施,改善粉土工程特性,将改良后的粉土作为路基填料使用,使得高速公路建设在就近利用土源、提高材料使用效率、降低投资成本等方面获得卓有的成效。 In this paper, a highway highway construction improvement trial for the case of silt, the use of mixed cement silt subgrade to be improved to improve the construction quality of silt subgrade to ensure the use of silt subgrade to meet the construction design requirements, save high-speed Highway earthwork distance caused by the increase in engineering costs. Experiments show that the improvement measures for silt to improve the silt engineering properties, the improved silt as a subgrade filler, making highway construction in the vicinity of the use of soil sources, improve material efficiency, reduce investment costs and so on Effective.