关键词: 冻结作用, 路基, 电阻率, 冻结温度

Abstract: The frequent freeze-thaw cycleshave a significantly adverse impact on the engineering performance on the soil subgrade,therefore, it is necessary to understand the soil behaviors under the freeze thaw cycles for the future projects. The soil resistivity,as an intermediate quantity,can be quickly measured,which means it may be suitable for the index properties of soil performance under permafrost conditions.In this study, soil samples were experienced seven (7) freezethaw cycles.The resistivity and deformation of soil samples were measured in the entire process to establish relationships among various parameters It can be concluded that, after measuring the resistivity during freeze, the sample deformedonly slightly under the closed condition. Different sample of degrees of compaction haveresulted in different resistivity values.The maximum variation of sample resistivity changes linearly with temperature under the frizzed conditions.

Key words: Freeze Influence, Subgrade, Resistivity, Freezing Temperature