水泥改性膨胀土击实试验研究

Study on Compaction Test of Swelling Soil Modified by Cement

根据实际工程中水泥改性膨胀土填筑压实度达不到设计要求的问题,通过一系列击实试验成果资料的对比分析,得出随着膨胀土掺加水泥拌和后击实试验时间不同对最大干密度和最优含水率的影响规律,提出了应采用和现场碾压工况相匹配的击实试验参数,用于现场压实度检测,解决了施工填筑质量的控制问题。

In engineering practice, the compaction degree of the cement-modified soil cannot satisfy the design requirement.Through comparison and analysis on data of a series of compaction tests, the law impacting the maximum dry intensity and the optimum moisture content with different compaction duration after the soil being mixed with cement is derived.Parameters of the compaction tests matching the site compaction conditions to be applied are raised, which can be utilized to inspect the site compaction degree, providing the solution of the quality control ofembankment construction.