| 高岭土电化学阻抗谱与抗剪强度的试验研究 |
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| 引用本文： | 张凯信,韩鹏举,雷钰,何斌.高岭土电化学阻抗谱与抗剪强度的试验研究[J].非金属矿,2019(3):62-65. |
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| 作者姓名： | 张凯信 韩鹏举 雷钰 何斌 |
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| 作者单位： | 太原理工大学建筑与土木工程学院 |
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| 基金项目： | 国家自然科学基金项目(41807256);岩土力学与工程国家重点实验室资助课题(Z017003);河海大学岩土力学与堤坝工程国家教育部实验室开放基金项目(201702) |
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| 摘 要： | 基于高岭土的电化学体系,通过研究不同粒径和不同含水量的抗剪强度指标与电化学参数性质,建立等效电路模型。试验表明:随着含水量的递增,Nyquist图像特征隶属于准Randles模型;Bode图特征则表现为随着含水量递增,土的阻抗模值持续减小;等效电路模型随着含水量递增,溶液电阻RS、电荷转移电阻Rt、阻抗系数σ不断减小,CPE不断增大。建立了高岭土抗剪强度与电化学参数间的数学模型。
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| 关 键 词： | NYQUIST 图 Bode 图 等效电路 阻抗参数 抗剪强度 |
Experimental Study on Electrochemical Impedance Spectra and Shear Strength of Kaolin |
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| Zhang Kaixin,Han Pengju,Lei Yu,He Bin.Experimental Study on Electrochemical Impedance Spectra and Shear Strength of Kaolin[J].Non-metallic Mines,2019(3):62-65. |
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| Authors: | Zhang Kaixin Han Pengju Lei Yu He Bin |
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| Affiliation: | (College of Architecture and Civil Engineering, Taiyuan University, Taiyuan, Shanxi 030024) |
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| Abstract: | Based on kaolin electrochemical system, through the study of different particle sizes and different water content of kaolin relation between shear strength index and the nature of electrochemical parameters. The establishment of a kaolin electrochemical equivalent circuit model. The results show that with the increase of water content, Nyquist image features belong to quasi-Randles model, while Bode diagram features show that the impedance modulus of soil decreases continuously with the increase of water content.. With the increase of water content, solution resistance RS, charge transfer resistance R t and impedance coefficient σ decrease and CPE increase. A mathematical model between shear strength and electrochemical parameters of kaolin was established. |
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| Keywords: | nyquist diagram bode diagram equivalent circuit impedance parameter shear strength |
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