中文摘要：

为研究Cr^6＋含量对重塑土抗剪强度的影响以及剪切过程中电阻率的变化，制备Cr^6＋含量分别为0、5、50、500、5000mg／kg的污染重塑土，进行电阻率试验和直剪试验。结果表明：Cr^6＋污染土剪应力随剪切位移增大而增加，没有明显的屈服点；随Cr^6＋含量增大电阻率减小，且Cr^6＋含量越大电阻率波动越小，电阻率随剪切位移增大呈减小趋势；抗剪强度、电阻率都随Cr^6＋含量增大呈先增大再减小的变化规律，电阻率越小抗剪强度越小，二者呈正相关关系。定义了土体电阻率的敏感度及原始电阻率，敏感度越大、原始电阻率越小，越能较好地反映土体的变化，在Cr^6＋含量为500mg／kg情况下可以较好地监测土体破坏情况。

英文摘要：

In order to study the shear strength and electrical resistivity of remolded loess contaminated by Cr^6＋ in different quantities, the laboratory tests were conducted. Remolded loess samples contaminated by Cr^6＋ was prepared in the quantities of 0, 5, 50,500 and 5000 mg/kg, then tested the electrical resistivity and shear strength. The results show that with the displacement increasing, the shear strength increases all through, the electrical resistivity decreases slowly; with Cr^6＋ increasing, the electrical resistivity decreases and floated smaller; with Cr^6＋ increasing, the shear strength and electrical resistivity increase at first, then decrease, the smaller the electrical the less weak the shear strength. It defines the sensitivity and the original electrical resistivity of remolded loess and the larger sensitivity and smaller original electrical resistivity can reflect the structural change of loess. When the quantity of Cr^6＋ is 500 mg/kg, it can monitor the break of soil＇ s structure better.