水泥土的电阻率特性与应用探讨 English Version
Experimental study on electrical resistivity of soil-cement
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摘要: 利用低频交流电阻测试仪,研究了现场水泥土样和室内制备的水泥土样的电阻率与其相关参数的关系。结果表明,水泥土的电阻率随着龄期、水泥掺入比的增大而增大;随着水泥土含水率、饱和度、似水灰比的增大而减小。研究证明,水泥土电阻率与水泥土抗压强度和标贯击数存在着很好的相关性,对电阻率法应用于水泥土桩质量的无损检测进行了探讨。Abstract: Recently in China,soil-cement has been widely used to improve the soft ground in the highway construction engineering.In the literature studies were mainly on the mechanical performance of the soil-cement,while its electrical resistivity were not well addressed.The electrical resistivity of the remolded soil-cement and the in-situ soil-cement column were investigated.It was shown that the electrical resistivity of the soil-cement increased with the increase of the cement-mixing ratio and curing time,and decreased with the increase of the water content,degree of saturation and water-cement ratio.A simple equation was proposed to predict the electrical resistivity of soil-cement under the condition of the specified curing time and water-cement ratio.It was found that the electrical resistivity had a good relationship with the unconfined compression strength and blow count of SPT.It was expected that the electrical resistivity method could be widely used for checking/controlling the quality of soil-cement in practice.
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Keywords:
- soil-cement /
- electrical resistivity /
- unconfined compression strength /
- test /
- strength prediction
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