Strength Characteristics and Electrochemical Impedance Spectroscopy Characterization of Red Mud-Coal Metakaolin Geopolymers
文献类型：期刊论文
| 作者 | Liu, Jianping2; Lu, Yisi2; Bai, Xiaohong1,2; Han, Pengju2; Xie, Ruizhen4; He, Bin2,3 |
| 刊名 | INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
 |
| 出版日期 | 2020-11-01 |
| 卷号 | 15期号:11页码:10694-10706 |
| 关键词 | geopolymer compressive strength EIS microstructure equivalent circuit |
| ISSN号 | 1452-3981 |
| DOI | 10.20964/2020.11.03 |
| 英文摘要 | In this paper, the compressive strength and electrochemical impedance spectroscopy (EIS) of red mud- coal metakaolin (RM-CMK) geopolymers with different Na/Al atomic molar ratios at the age of 28 d were tested and analyzed. The Na/Al atomic molar ratio had significant influence on the compressive strength and EIS of the RM-CMK geopolymers. With increasing Na/Al, the compressive strength of the RM-CMK geopolymer first increased and then decreased. When Na/Al was 1.0, the compressive strength reached the maximum. The EIS results yielded a Nyquist diagram that presented flat capacitive reactance arcs in the high-frequency region and insignificant diffusion curves in the low-frequency region. The Bode diagram showed that with increasing Na/Al, the peak values of the impedance modulus and phase angle both first increased and then decreased. When Na/Al was 1.0, the peak values of the impedance modulus and phase angle reached the maximum. Combined with the variation law of EIS, the equivalent circuit of the RM-CMK geopolymer was determined to be Re(C(RetW)). In addition, by means of a scanning electron microscope (SEM), images of the RM-CMK geopolymer microstructure were obtained. The changes in the strength and electrochemical responses of the RM-CMK geopolymer were explained from the microscopic perspective. In this study, EIS was used to test and analyze the electrochemical impedance characteristics of the geopolymer. This proved the feasibility of the application of EIS technology to geopolymer strength analysis. It also provided new ideas and means for the nondestructive testing technology of geopolymers. |
| 资助项目 | National Natural Science Foundation of China[51879180] ; National Natural Science Foundation of China[51978438] ; National Natural Science Foundation of China[41807256] ; China Scholarship Council[201906930018] ; Chinese Academy of Sciences[Z017003] ; Sichuan University of Science and Engineering, Material Corrosion and Protection Key Laboratory of Sichuan Province[2020CL13] |
| WOS研究方向 | Electrochemistry |
| 语种 | 英语 |
| WOS记录号 | WOS:000591930300005 |
| 出版者 | ESG |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/25301]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Bai, Xiaohong |
| 作者单位 | 1.Key Lab Geotech & Underground Engn Shanxi Prov, Taiyuan 030024, Peoples R China 2.Taiyuan Univ Technol, Coll Civil Engn, Taiyuan 030024, Peoples R China 3.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 4.Jinzhong Univ, Mech Inst, Taiyuan 030619, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Jianping,Lu, Yisi,Bai, Xiaohong,et al. Strength Characteristics and Electrochemical Impedance Spectroscopy Characterization of Red Mud-Coal Metakaolin Geopolymers[J]. INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE,2020,15(11):10694-10706. |
| APA | Liu, Jianping,Lu, Yisi,Bai, Xiaohong,Han, Pengju,Xie, Ruizhen,&He, Bin.(2020).Strength Characteristics and Electrochemical Impedance Spectroscopy Characterization of Red Mud-Coal Metakaolin Geopolymers.INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE,15(11),10694-10706. |
| MLA | Liu, Jianping,et al."Strength Characteristics and Electrochemical Impedance Spectroscopy Characterization of Red Mud-Coal Metakaolin Geopolymers".INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE 15.11(2020):10694-10706. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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