The study undertakes the tests on the physical indexes of the collapsible loess of the railway subgrade after mixing cement and lime,identifies the optimal mixture amount of the cement and lime after the research,so as to provide the reference for identifying the collapsible soil subgrade technical scheme.%对铁路路基湿陷性黄土掺加水泥、石灰后物理指标进行了测试,并通过研究确定了水泥和石灰的最优掺量,为确定湿陷性黄土路基技术方案提供依据。
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