Spatial imaging of cracks in fiber reinforced cementitious composites by EIT

Tsung-Chin Hou, J. P. Lynch

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

Abstract

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.

Original languageEnglish
Title of host publicationAmerican Concrete Institute - Health Monitoring Systems and Sensors for Assessing Concrete at the ACI 2008 Spring Convention
Pages53-71
Number of pages19
Edition252 SP
Publication statusPublished - 2008
EventHealth Monitoring Systems and Sensors for Assessing Concrete- ACI 2008 Spring Convention - Los Angeles, CA, United States
Duration: 2008 Mar 302008 Apr 3

Other

OtherHealth Monitoring Systems and Sensors for Assessing Concrete- ACI 2008 Spring Convention
CountryUnited States
CityLos Angeles, CA
Period08-03-3008-04-03

Fingerprint

Cracks
Imaging techniques
Fibers
Composite materials
Electric properties
Acoustic impedance
Monitoring
Structural health monitoring
Strain hardening
Hydration
Spatial distribution
Tomography
Electricity
Health

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science(all)

Cite this

Hou, T-C., & Lynch, J. P. (2008). Spatial imaging of cracks in fiber reinforced cementitious composites by EIT. In American Concrete Institute - Health Monitoring Systems and Sensors for Assessing Concrete at the ACI 2008 Spring Convention (252 SP ed., pp. 53-71)
Hou, Tsung-Chin ; Lynch, J. P. / Spatial imaging of cracks in fiber reinforced cementitious composites by EIT. American Concrete Institute - Health Monitoring Systems and Sensors for Assessing Concrete at the ACI 2008 Spring Convention. 252 SP. ed. 2008. pp. 53-71
@inproceedings{47ec208b43b241e587c03130f7ff905e,
title = "Spatial imaging of cracks in fiber reinforced cementitious composites by EIT",
abstract = "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.",
author = "Tsung-Chin Hou and Lynch, {J. P.}",
year = "2008",
language = "English",
isbn = "9781605603957",
pages = "53--71",
booktitle = "American Concrete Institute - Health Monitoring Systems and Sensors for Assessing Concrete at the ACI 2008 Spring Convention",
edition = "252 SP",

}

Hou, T-C & Lynch, JP 2008, Spatial imaging of cracks in fiber reinforced cementitious composites by EIT. in American Concrete Institute - Health Monitoring Systems and Sensors for Assessing Concrete at the ACI 2008 Spring Convention. 252 SP edn, pp. 53-71, Health Monitoring Systems and Sensors for Assessing Concrete- ACI 2008 Spring Convention, Los Angeles, CA, United States, 08-03-30.

Spatial imaging of cracks in fiber reinforced cementitious composites by EIT. / Hou, Tsung-Chin; Lynch, J. P.

American Concrete Institute - Health Monitoring Systems and Sensors for Assessing Concrete at the ACI 2008 Spring Convention. 252 SP. ed. 2008. p. 53-71.

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

TY - GEN

T1 - Spatial imaging of cracks in fiber reinforced cementitious composites by EIT

AU - Hou, Tsung-Chin

AU - Lynch, J. P.

PY - 2008

Y1 - 2008

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=67649218401&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=67649218401&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:67649218401

SN - 9781605603957

SN - 9781605603957

SP - 53

EP - 71

BT - American Concrete Institute - Health Monitoring Systems and Sensors for Assessing Concrete at the ACI 2008 Spring Convention

ER -

Hou T-C, Lynch JP. Spatial imaging of cracks in fiber reinforced cementitious composites by EIT. In American Concrete Institute - Health Monitoring Systems and Sensors for Assessing Concrete at the ACI 2008 Spring Convention. 252 SP ed. 2008. p. 53-71