全风化千枚岩铁路路基填料适用性试验研究

Laboratory test study on applicability of fully weathered phyllite railway subgrade filling

通过矿物成分分析、化学成分分析、颗粒分析、界限含水率、自由膨胀率等试验对全风化千枚岩试样的物理化学和水理性质进行了系统分析,研究了其用于铁路路基填料的适用性。研究表明试验选取的全风化千枚岩为C3组填料,满足重载铁路基床以下路堤填料要求。

The physical,chemical and hydraulic properties of the fully weathered phyllite were systematically analyzed by mineral composition analysis,chemical composition analysis,particle analysis,limit water content,free expansion rate and so on. The applicability of the filler for railway subgrade was studied. The study shows that the fully weathered phyllite selected in the test is C3 group filler,which meets the requirements of embankment filling under the heavy haul railway foundation bed.