Testing an Impedance Non-destructive Method to Evaluate Steel-Fiber Concrete Samples

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F18%3APU127556" target="_blank" >RIV/00216305:26220/18:PU127556 - isvavai.cz</a>
Result on the web
<a href="http://www.degruyter.com/view/j/msr.2017.18.issue-1/msr-2018-0006/msr-2018-0006.xml?format=INT" target="_blank" >http://www.degruyter.com/view/j/msr.2017.18.issue-1/msr-2018-0006/msr-2018-0006.xml?format=INT</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1515/msr-2018-0006" target="_blank" >10.1515/msr-2018-0006</a>

Result language
angličtina
Original language name
Testing an Impedance Non-destructive Method to Evaluate Steel-Fiber Concrete Samples
Original language description
Steel-fiber reinforced concrete is a composite material characterized by outstanding tensile properties and resistance to the development of cracks. The concrete, however, exhibits such characteristics only on the condition that the steel fibers in the final, hardened composite have been distributed evenly. The current methods to evaluate the distribution and concentration of a fiber composite are either destructive or exhibit a limited capability of evaluating the concentration and orientation of the fibers. In this context, the paper discusses tests related to the evaluation of the density and orientation of fibers in a composite material. Compared to the approaches used to date, the proposed technique is based on the evaluation of the electrical impedance Z in the band close to the resonance of the sensor-sample configuration. Using analytically expressed equations, we can evaluate the monitored part of the composite and its density at various depths of the tested sample. The method employs test blocks of composites, utilizing the resonance of the measuring device and the measured sample set; the desired state occurs within the interval of between f=3 kHz and 400 kHz.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
20201 - Electrical and electronic engineering

Project
<a href="/en/project/LO1401" target="_blank" >LO1401: Interdisciplinary Research of Wireless Technologies</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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