机场场道工程红土砾料填料压实度检测方法的应用研究

Research on Red Clay Gravel Backfilling Material Compaction Test Methods Applied in Airport Road Project

针对传统场道道床压实度检测方法在南苏丹朱巴国际机场场道出现偏差的问题,分析其道床填料的组成,发现是由于红土砾料填料中含石率与标准击实试验土样的含石率不一致所造成。结合不同含石率试样的最大干密度试验,分析得知含石率与填料的最大干密度呈线性关系。经过试验论证,采用含石率与标准最大干密度曲线对比法来检测场道道床压实度,具有更高的准确性和可靠性。

Regarding the deviation arising from the traditional roadbed compaction test method in the application of testing the compaction degree of roadbed in Juba International Airport Project,this paper presents the analysis of composition of backfilling materials of the roadbed and the conclusion that this deviation results from the different stone proportions in red clay gravel backfilling materials and soil samples in standard compaction test. Combined with tests on the maximum dry density of samples with different stone proportions,the paper shows the discovery of the linear relationship between stone proportion and maximum dry density of backfilling materials. Based on laboratory experiments,comparison between stone proportion and standard maximum dry density to determine the roadbed compaction degree has a higher,accuracy and reliability.