【摘要】 为了探究不同龄期下,赤泥改良石灰土的应力-应变-电阻率曲线的变化,测试了试块的初始电阻率、无侧限抗压强度和破坏电阻率,且在无侧限抗压强度测试过程中全程同步检测试块的电阻率变化,采用所得数据绘制应力-应变-电阻率曲线并进行分析。分析结果表明:试块初始电阻率和无侧限抗压强度均随龄期的增加而增加;同赤泥掺量下的应力-应变-电阻率曲线在不同龄期条件下的变化基本一致;在0%赤泥掺量条件下,电阻率会随应力的增加而减小,在即将达到极限应力时会迅速增加;在30%赤泥掺量条件下,电阻率随应力的增大而持续减小并最终保持稳定;破坏电阻率随龄期的增加呈线性上升的趋势。更多还原

【Abstract】 In order to investigate the change of stress-strain-resistivity curve of red mud modified lime soil at different ages,the initial resistivity,the unconfined compressive strength and the failure resistivity of the specimen were measured, and the change of the resistivity of the specimen was detected synchronously during the whole process of testing the unconfined compressive strength. And the stressstrain-resistivity curves were drawn and analyzed by using the obtained data. The results show that the initial resistivity and unconfined compressive strength increase with the increase of age. The stress-strainresistivity curves of the same amount of red mud at different ages are basically consistent with each other.Under the condition of 0% red mud content,the resistivity decreases with the increase of stress,and increases rapidly when the limit stress is about to reach. Under the condition of 30% red mud content,the resistivity decreases continuously with the increase of stress and finally remains stable. The failure resistivity increases linearly with the increase of age.更多还原