Study on temperature and damage sensing capability of Portland cement paste through the thermoelectric measurements

Tsung-Chin Hou, Ko Hung Tai, Yu Min Su

研究成果: Conference contribution

摘要

This study attempted to investigate the self-sensing capability of Portland cement composites in sensing temperature and detecting damages through the measurements of materials' thermoelectric properties. Specimens were made of Ordinary Portland Cement (OPC) with the water to cement ratio of 0.4. Temperature sensing property was characterized at various ages of the specimens from 28 to 49 days and at dried/moisturized conditions. It was found there exists an approximately linear relationship between temperature differences (?"T) and the measured thermoelectric potentials, which is known as the Seebeck effect. This linearity was observed to be varied but able to be characterized for cement pastes at different ages and water saturation conditions. Mechanical loading that introduced different types and degrees of damages also translated into the variations of thermoelectric properties. Specifically, different types of compressive loads were tested for comparison. The study results have shown that Seebeck coefficient dropped with introduced damages, and restored with the subsequent re-curing as well as the continued cement hydration. Mild and moderate damages can be partially or fully restored, while severe damages that have resulted in significant drop of the Seebeck coefficients would restrain the self-restoration. Determination of the damage threshold was not yet revealed in this study, while it was shown obviously there existed one. Our investigation results indicated that characterizing the self-sensing capability of Portland cement composites is achievable through the measurements of thermoelectric properties. This study, in particular, has showcased the temperature sensing and damage detection capability.

原文English
主出版物標題Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, and Civil Infrastructure 2017
編輯Tzu-Yang Yu, H. Felix Wu, Peter J. Shull, Andrew L. Gyekenyesi
發行者SPIE
ISBN(電子)9781510608238
DOIs
出版狀態Published - 2017 一月 1
事件Conference on Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XI 2017 - Portland, United States
持續時間: 2017 三月 262017 三月 29

出版系列

名字Proceedings of SPIE - The International Society for Optical Engineering
10169
ISSN(列印)0277-786X
ISSN(電子)1996-756X

Other

OtherConference on Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XI 2017
國家United States
城市Portland
期間17-03-2617-03-29

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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  • 引用此

    Hou, T-C., Tai, K. H., & Su, Y. M. (2017). Study on temperature and damage sensing capability of Portland cement paste through the thermoelectric measurements. 於 T-Y. Yu, H. F. Wu, P. J. Shull, & A. L. Gyekenyesi (編輯), Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, and Civil Infrastructure 2017 [1016919] (Proceedings of SPIE - The International Society for Optical Engineering; 卷 10169). SPIE. https://doi.org/10.1117/12.2258596