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

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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

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.

Original languageEnglish
Title of host publicationNondestructive Characterization and Monitoring of Advanced Materials, Aerospace, and Civil Infrastructure 2017
EditorsTzu-Yang Yu, H. Felix Wu, Peter J. Shull, Andrew L. Gyekenyesi
PublisherSPIE
ISBN (Electronic)9781510608238
DOIs
Publication statusPublished - 2017 Jan 1
EventConference on Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XI 2017 - Portland, United States
Duration: 2017 Mar 262017 Mar 29

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume10169
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Other

OtherConference on Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XI 2017
CountryUnited States
CityPortland
Period17-03-2617-03-29

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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  • Cite this

    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. In T-Y. Yu, H. F. Wu, P. J. Shull, & A. L. Gyekenyesi (Eds.), Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, and Civil Infrastructure 2017 [1016919] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 10169). SPIE. https://doi.org/10.1117/12.2258596