Fiber cement composites with failure detection function
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26232511%3A_____%2F16%3AN0000002" target="_blank" >RIV/26232511:_____/16:N0000002 - isvavai.cz</a>
Result on the web
<a href="http://www.sciencedirect.com/science/article/pii/S1877705816317635" target="_blank" >http://www.sciencedirect.com/science/article/pii/S1877705816317635</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.proeng.2016.07.375" target="_blank" >10.1016/j.proeng.2016.07.375</a>
Alternative languages
Result language
angličtina
Original language name
Fiber cement composites with failure detection function
Original language description
The article presents results of the research focused on multifunctional advanced materials with special properties. The aim of the research activity is to develop an electrically conductive cement-based composite which enables detection of failures in material structures caused by explosions, bullets or explosion fragments. The piezoresistive material should react to changes in the state of stress in building structures by changing its electrical properties. The paper closely describes mechanical, electrical and piezoresistive properties of the tested materials. The influence of different carbon and metal components on the conductivity of the concrete composite, its piezoresistivity and failure detection function under high-speed ballistic loading were tested. Electromagnetic shielding efficiency was additionally measured on the test detection composites. The test results did not confirm the need for the exclusive use of carbon ingredients but rather they confirmed their suitability for reducing the impedance where electrically conductive reinforcement is not used. It was proved that better conductivity does not automatically mean better detection sensitivity. Too low initial impedance of the composite adversely increases the demands on the sensitivity measuring tool. The detection composites are pressure-sensitive, they changed the impedance not only during the mechanical pressing but also during the mechanical clamping of samples for ballistic testing. Differently conductive cementitious composites enable the detection of failures in material structures caused by fast dynamic load. They change the impedance not only the failure of the matrix by projectile but also after projectile impact without breaking the matrix.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
JN - Civil engineering
OECD FORD branch
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Result continuities
Project
<a href="/en/project/TE02000162" target="_blank" >TE02000162: Centre of advanced materials and technologies for protection and safety enhancement</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Procedia Engineering
ISSN
1877-7058
e-ISSN
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Volume of the periodical
2016
Issue of the periodical within the volume
Volume 151
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
8
Pages from-to
183-190
UT code for WoS article
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EID of the result in the Scopus database
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