Study on the characteristics of the soil-rock mixture structure based on the high-frequency extremum of the electrochemical impedance spectroscopy
DONG Hui1，2，CHEN Li1，JIANG Xiuzi1，2，DING Yanhuai1
(1. College of Civil Engineering and Mechanics，Xiangtan University，Xiangtan，Hunan 411105，China；2. Hunan Key Laboratory of Geomechanics and Engineering Safety，Xiangtan University，Xiangtan，Hunan 411105，China)
In order to make a preliminary exploration of the unity of the study of soil-rock mixture under different basic materials and different scales，the electrochemical impedance spectroscopy method was used to study the soil-rock mixture composed of ideal materials.Through the macroscopical adjustment of the three materials indexes of the rock-soil mixture system of water content，soil-rock ratio，and particle size，the rules of the electrochemical impedance spectroscopy results were obtained.Based on the high-frequency extremum of the electrochemical impedance spectroscopy(EIS)，its regularity was described and further studied.Thus，a preliminary mapping was made between the electron passability at the micro-scale and the material indexes at the macro-scale.A series of concepts and tools such as coupling degree，curve of the impedance¢s extremum(CIE)，optimal point of CIE were put forward.The basic effect of water content on the structure of soil-rock mixture was obtained，and the influence of soil-rock ratio is dominated by two factors. Especially with the orderly change of the particle size，its high-frequency extremum moved along curved path.These above research results have some reference value to the study of the structural characteristics of soil-rock mixture.
董 辉1，2，陈 立1，蒋秀姿1，2，丁燕怀1. 基于电化学阻抗谱高频极值的土石混合体结构特征研究[J]. 岩石力学与工程学报, 2017, 36(S2): 4134-4141.
DONG Hui1，2，CHEN Li1，JIANG Xiuzi1，2，DING Yanhuai1. Study on the characteristics of the soil-rock mixture structure based on the high-frequency extremum of the electrochemical impedance spectroscopy. , 2017, 36(S2): 4134-4141.
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2017, Vol. 36 
