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Evaluation of Sample-Electrode Contact Impedance in Two-Point Measured AC Impedance Spectroscopy of Cement-Based Materials

Received: 11 March 2018     Accepted: 24 April 2018     Published: 22 May 2018
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Abstract

In this study, AC impedance spectroscopy measurements of cement paste with 0.5 W/C were collected and interpreted using different electrode-sample contact methods. The results indicated that when using a conductive glue contact (CG), two capacitive loops and an inclined line appeared within the frequency range of 100-0.1 Hz. An equivalent circuit, Rs (Cd1 (RctZw)) (Rd2Cd2), was proposed for contact impedance of the electrode-sample interface, and correction of error caused by the contact impedance of electrode-sample indicated that the contact impedance had almost no effect on the ACIS measurements of the cement paste with CG contact in the present curing conditions. When the samples were cured in a fog room, the CG and electrode pre-casting (EP) contact had similar interpreted parameters (Pcp). However, the demolded sample-electrode (DS) contact method and the drying environment used in the manufacture of the EP contact can significantly change Pcp. In this situation, both of CG and EP contact are reasonable for ACIS measurements of cement-based materials. EP contact cannot be used for samples cured in a drying environment, and DS contact cannot be recommended for ACIS measurements of cement-based materials.

Published in International Journal of Materials Science and Applications (Volume 7, Issue 3)
DOI 10.11648/j.ijmsa.20180703.15
Page(s) 106-114
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2018. Published by Science Publishing Group

Keywords

Electrode-Sample Contact Methods, Sample-Electrode Contact Impedance, AC Impedance, Cement-Based Materials

References
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Cite This Article
  • APA Style

    Fuqiang He, Ruipan Wang, Runxiao Zhang, Changping Chen, Li Lin, et al. (2018). Evaluation of Sample-Electrode Contact Impedance in Two-Point Measured AC Impedance Spectroscopy of Cement-Based Materials. International Journal of Materials Science and Applications, 7(3), 106-114. https://doi.org/10.11648/j.ijmsa.20180703.15

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    ACS Style

    Fuqiang He; Ruipan Wang; Runxiao Zhang; Changping Chen; Li Lin, et al. Evaluation of Sample-Electrode Contact Impedance in Two-Point Measured AC Impedance Spectroscopy of Cement-Based Materials. Int. J. Mater. Sci. Appl. 2018, 7(3), 106-114. doi: 10.11648/j.ijmsa.20180703.15

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    AMA Style

    Fuqiang He, Ruipan Wang, Runxiao Zhang, Changping Chen, Li Lin, et al. Evaluation of Sample-Electrode Contact Impedance in Two-Point Measured AC Impedance Spectroscopy of Cement-Based Materials. Int J Mater Sci Appl. 2018;7(3):106-114. doi: 10.11648/j.ijmsa.20180703.15

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  • @article{10.11648/j.ijmsa.20180703.15,
      author = {Fuqiang He and Ruipan Wang and Runxiao Zhang and Changping Chen and Li Lin and Xiaopeng An},
      title = {Evaluation of Sample-Electrode Contact Impedance in Two-Point Measured AC Impedance Spectroscopy of Cement-Based Materials},
      journal = {International Journal of Materials Science and Applications},
      volume = {7},
      number = {3},
      pages = {106-114},
      doi = {10.11648/j.ijmsa.20180703.15},
      url = {https://doi.org/10.11648/j.ijmsa.20180703.15},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijmsa.20180703.15},
      abstract = {In this study, AC impedance spectroscopy measurements of cement paste with 0.5 W/C were collected and interpreted using different electrode-sample contact methods. The results indicated that when using a conductive glue contact (CG), two capacitive loops and an inclined line appeared within the frequency range of 100-0.1 Hz. An equivalent circuit, Rs (Cd1 (RctZw)) (Rd2Cd2), was proposed for contact impedance of the electrode-sample interface, and correction of error caused by the contact impedance of electrode-sample indicated that the contact impedance had almost no effect on the ACIS measurements of the cement paste with CG contact in the present curing conditions. When the samples were cured in a fog room, the CG and electrode pre-casting (EP) contact had similar interpreted parameters (Pcp). However, the demolded sample-electrode (DS) contact method and the drying environment used in the manufacture of the EP contact can significantly change Pcp. In this situation, both of CG and EP contact are reasonable for ACIS measurements of cement-based materials. EP contact cannot be used for samples cured in a drying environment, and DS contact cannot be recommended for ACIS measurements of cement-based materials.},
     year = {2018}
    }
    

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  • TY  - JOUR
    T1  - Evaluation of Sample-Electrode Contact Impedance in Two-Point Measured AC Impedance Spectroscopy of Cement-Based Materials
    AU  - Fuqiang He
    AU  - Ruipan Wang
    AU  - Runxiao Zhang
    AU  - Changping Chen
    AU  - Li Lin
    AU  - Xiaopeng An
    Y1  - 2018/05/22
    PY  - 2018
    N1  - https://doi.org/10.11648/j.ijmsa.20180703.15
    DO  - 10.11648/j.ijmsa.20180703.15
    T2  - International Journal of Materials Science and Applications
    JF  - International Journal of Materials Science and Applications
    JO  - International Journal of Materials Science and Applications
    SP  - 106
    EP  - 114
    PB  - Science Publishing Group
    SN  - 2327-2643
    UR  - https://doi.org/10.11648/j.ijmsa.20180703.15
    AB  - In this study, AC impedance spectroscopy measurements of cement paste with 0.5 W/C were collected and interpreted using different electrode-sample contact methods. The results indicated that when using a conductive glue contact (CG), two capacitive loops and an inclined line appeared within the frequency range of 100-0.1 Hz. An equivalent circuit, Rs (Cd1 (RctZw)) (Rd2Cd2), was proposed for contact impedance of the electrode-sample interface, and correction of error caused by the contact impedance of electrode-sample indicated that the contact impedance had almost no effect on the ACIS measurements of the cement paste with CG contact in the present curing conditions. When the samples were cured in a fog room, the CG and electrode pre-casting (EP) contact had similar interpreted parameters (Pcp). However, the demolded sample-electrode (DS) contact method and the drying environment used in the manufacture of the EP contact can significantly change Pcp. In this situation, both of CG and EP contact are reasonable for ACIS measurements of cement-based materials. EP contact cannot be used for samples cured in a drying environment, and DS contact cannot be recommended for ACIS measurements of cement-based materials.
    VL  - 7
    IS  - 3
    ER  - 

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Author Information
  • School of Civil Engineering and Architecture, Xiamen University of Technology, Xiamen, China

  • College of Materials, Xiamen University, Xiamen, China

  • Department of Civil Engineering, University of Toronto, Toronto, Canada

  • School of Civil Engineering and Architecture, Xiamen University of Technology, Xiamen, China

  • School of Civil Engineering and Architecture, Xiamen University of Technology, Xiamen, China

  • China Building Materials Academy, Beijing, China

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