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Evolution of impedance spectra during debonding and pullout of single steel fibers from cement

Torrents, Josep M. and Easley, Thomas C. and Faber, K. T. and Mason, Thomas O. and Shah, Surendra P. (2001) Evolution of impedance spectra during debonding and pullout of single steel fibers from cement. Journal of the American Ceramic Society, 84 (4). pp. 740-746. ISSN 0002-7820. https://resolver.caltech.edu/CaltechAUTHORS:20140908-181323409

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Abstract

Impedance measurements were made during the debonding and pullout of a fully embedded, crack-bridging single steel fiber from a cement matrix. Nyquist plots gave evidence of two bulk arcs, and the “cusp” between them proved to be sensitive to both debonding and pullout of the embedded fiber. Physical simulations that used a steel wire in tap water were applied to interpret the debonding and pull-out results. The cusp resistance from impedance spectroscopy provided quantitative information about the extent of pullout and, at least qualitatively, correlated with the debond length before pullout. Impedance measurements on both sides of the matrix crack showed that crack deflection and debonding occurred on both sides symmetrically.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1111/j.1151-2916.2001.tb00735.xDOIArticle
http://onlinelibrary.wiley.com/doi/10.1111/j.1151-2916.2001.tb00735.x/abstractPublisherArticle
Additional Information:© 2001 The American Ceramic Society. Manuscript No. 188976. Received November 3, 1999; approved November 13, 2000. This work was supported by the National Science Foundation Science and Technology Center for Advanced Cement-Based Materials (under Grant No. CHE-91-20002 and is being continued under Grant No. DMR-00-73197). Author JMT acknowledges the support of the Spanish government through the Secretary of the State for Universities, Research and Development of the Ministry of Education and Culture (under Grant No. PR98-0036975531).
Funders:
Funding AgencyGrant Number
NSFCHE-91-20002
NSFDMR-00-73197
Ministry of Education and Culture, SpainPR98-0036975531
Issue or Number:4
Record Number:CaltechAUTHORS:20140908-181323409
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20140908-181323409
Official Citation:Torrents, J. M., Easley, T. C., Faber, K. T., Mason, T. O. and Shah, S. P. (2001), Evolution of Impedance Spectra during Debonding and Pullout of Single Steel Fibers from Cement. Journal of the American Ceramic Society, 84: 740–746. doi: 10.1111/j.1151-2916.2001.tb00735.x
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:49394
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:09 Sep 2014 18:22
Last Modified:03 Oct 2019 07:13

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