The assessment of mechanical properties of thermally stressed composite materials using radio frequency electrical field

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F18%3APU128470" target="_blank" >RIV/00216305:26110/18:PU128470 - isvavai.cz</a>
Alternative codes found
RIV/00216305:26110/19:PU132021 RIV/00216305:26110/18:PU132021
Result on the web
<a href="http://iopscience.iop.org/article/10.1088/1757-899X/379/1/012030/meta" target="_blank" >http://iopscience.iop.org/article/10.1088/1757-899X/379/1/012030/meta</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/1757-899X/379/1/012030" target="_blank" >10.1088/1757-899X/379/1/012030</a>

Result language
angličtina
Original language name
The assessment of mechanical properties of thermally stressed composite materials using radio frequency electrical field
Original language description
The main topic of this paper is the testing of cement-based composite materials that were stressed by high temperature. Impedance spectroscopy has been used as a non-destructive measurement method. The specimens were made from mortar mixture of CEM I type Portland cement, silica sand and fine gravel of various size classes for two sets of specimens. The sets, A and B, differed from each other also by the plasticizer used. The specimens were exposed to high temperatures in the range 23 - 1200 °C. Studying the structural changes in the process of heat build-up is an efficient way to assess the reliability of whole construction. Using the impedance spectra the relative permittivity, electrical conductivity and other characteristics have been obtained. In accordance with Debye s theory of dielectrics the changes of impedance parameters have been put into context with structural changes. For higher range of frequencies, 100 MHz up to 3 GHz, R&S ZNC vector analyzer with DAK 12 coaxial probe manufactured by Speag has been used. In this frequency spectrum the electrical conductivity and relative permittivity as a function of frequency have been measured.
Czech name
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Czech description
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
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

Article name in the collection
International Conference Building Materials, Products and Technologies
ISBN
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ISSN
1757-8981
e-ISSN
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Number of pages
6
Pages from-to
1-6
Publisher name
IOP Publishing
Place of publication
Neuveden
Event location
Češkovice
Event date
May 29, 2018
Type of event by nationality
EUR - Evropská akce
UT code for WoS article
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