软岩路基填料分组标准探讨

通过筛分、标准重型击实、三轴及X衍射等试验分析,探讨了按现行铁路路基设计规范对红砂岩等软岩粗粒土填料进行分组存在较大的不确定性;建议在填料分组及其选用填料时,应考虑填料矿物成分、填料强度及其衰减特性等综合因素;结论对红砂岩粗粒土等软岩用作路基填料的设计与施工具有参考价值。

Exploration on Filling Classification Standard for Soft Rock Subgrade

Through test analysis of screening,standard heavy compaction and triaxial and X diffraction,this paper indicates that classification of soft rock coarse granular soil filling such as red sandstone according to the current design code for railway subgrade has greater indetermination.It suggests that the comprehensive factors of filling such as mineral content,filling strength and fading characteristic shall be considered in filling classification and selection.The conclusion has referential value for the des...