Spatial imaging of cracks in fiber reinforced cementitious composites by EIT

T. C. Hou, J. P. Lynch

研究成果: Conference contribution

1 引文 斯高帕斯(Scopus)

摘要

Cementitious materials are generally classified as semi-conductors that are capable of carrying electricity when an external electrical signal is applied. The electrical properties of cementitious materials have been widely explored for monitoring their internal hydration processes. However, comparatively less work has been done in using the inherent electrical properties of cementitious materials for structural health monitoring. In this study, the electrical properties of a unique strain-hardening fiber reinforced cementitious composite termed Engineered Cementitious Composite (ECC) are utilized for monitoring the performance and health of ECC structural components. Previous work has utilized two- and four-point probe techniques for measuring ECC bulk conductivity and illustrating the piezoresistive properties of the material. This work introduces electrical impedance tomography (E10 as a powerful sensing methodology that measures the spatial distribution of conductivity over large areas of ECC elements. With a tomographic mapping of ECC conductivity, the distribution of strain fields and cracks in ECC elements can be observed in incredible visual detail.

原文English
主出版物標題American Concrete Institute - Health Monitoring Systems and Sensors for Assessing Concrete at the ACI 2008 Spring Convention
頁面53-71
頁數19
版本252 SP
出版狀態Published - 2008
事件Health Monitoring Systems and Sensors for Assessing Concrete- ACI 2008 Spring Convention - Los Angeles, CA, United States
持續時間: 2008 3月 302008 4月 3

出版系列

名字American Concrete Institute, ACI Special Publication
號碼252 SP
ISSN(列印)0193-2527

Other

OtherHealth Monitoring Systems and Sensors for Assessing Concrete- ACI 2008 Spring Convention
國家/地區United States
城市Los Angeles, CA
期間08-03-3008-04-03

All Science Journal Classification (ASJC) codes

  • 土木與結構工程
  • 建築與營造
  • 材料科學(全部)

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