Basic Physical, Electrical and Thermal Properties of Geopolymers with Enhanced Electrical Properties

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F19%3A00331027" target="_blank" >RIV/68407700:21110/19:00331027 - isvavai.cz</a>

Result on the web

<a href="https://aip.scitation.org/doi/10.1063/1.5120143" target="_blank" >https://aip.scitation.org/doi/10.1063/1.5120143</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/1.5120143" target="_blank" >10.1063/1.5120143</a>

Result language

angličtina

Original language name

Basic Physical, Electrical and Thermal Properties of Geopolymers with Enhanced Electrical Properties

Original language description

Geopolymers can be considered as competitive construction materials to cement-based materials. It is mainly due to their high strength, good chemical resistance, thermal stability and favorable development of hydration heat at early age. A reasonable amount of electrically conductive admixtures close to the percolation threshold enhances electrical properties of geopolymers which leads to their potential utilization in self-heating applications. In general, electrical and thermal conductivity is essential for an effective heat evolution and distribution through the material. Sufficiently high electrical conductivity ensures evolution of Joule’s heat initiated by acting of a power supply, whereas sufficiently high thermal conductivity ensures effective spreading of the generated heat. To assess the self-heating ability of such materials and effectiveness of their self-heating, it is necessary to experimentally determine electrical and thermal properties. In this paper, basic physical, electrical and thermal properties of geopolymers with different dosages of electrically conductive carbon black admixture are measured. Basic physical properties are determined by the gravimetric method, DC electrical properties by the 4-probes method and thermal properties by the pulse method. Addition of 10 wt. % of CB to the reference geopolymer is found to lead to a significant increase of electrical conductivity at the cost of a decrease of thermal conductivity. Nevertheless, geopolymer enhanced in such a way can be considered as a promising self-heating material.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

20501 - Materials engineering

Project

<a href="/en/project/GA19-11516S" target="_blank" >GA19-11516S: Geopolymers for smart applications in civil engineering</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2019

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

Central European Symposium on Thermophysics 2019 (CEST)

ISBN

978-0-7354-1876-9

ISSN

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e-ISSN

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Number of pages

4

Pages from-to

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Publisher name

AIP Conference Proceedings

Place of publication

New York

Event location

Banská Bystrica, Slovakia

Event date

Oct 16, 2019

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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