Metakaolin composite with graphite powder: Material characterization for self-heating potential evaluation

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F23%3A00370093" target="_blank" >RIV/68407700:21110/23:00370093 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1063/5.0146749" target="_blank" >https://doi.org/10.1063/5.0146749</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/5.0146749" target="_blank" >10.1063/5.0146749</a>

Result language

angličtina

Original language name

Metakaolin composite with graphite powder: Material characterization for self-heating potential evaluation

Original language description

Self-heating construction materials are of high potential within the design of de-icing and snow-melting systems used in constructions, roads, or pavements. In the past, mainly cementitious materials were subjected to the research of the design/optimization of self-heating mixtures using a wide range of electrically conductive admixtures, an appropriate determination of electrical properties, and electrode embedment/attachment. Taking into consideration the negative environmental impact of the production of cementitious materials, alkali-activated cementless composites are promising substituents that can be doped by electrically conductive admixtures to gain new functional properties, such as self-heating. The paper is focused on the design of alkali-activated metakaolin composite with 8 wt.% of graphite powder and experimental determination of basic physical and electrical properties to make a preliminary assessment of appropriateness for self-heating construction applications. The compressive strength, volt-ampere characteristic, DC electrical conductivity, as well as AC electrical characteristics were determined to assess the self-heating potential of the composite. The DC/AC electrical properties of the composite were promising in terms of self-heating function (σ = 3.01 x 10-1 S.m-1) at a reasonable level of mechanical properties for some construction applications (Rc = 10.5 MPa, Rf = 1.2 MPa).

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/GC22-00987J" target="_blank" >GC22-00987J: Multifunctional cementless composites with low environmental impact for special construction applications</a><br>

Continuities

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

Publication year

2023

Confidentiality

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

Article name in the collection

AIP Conference Proceedings

ISBN

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ISSN

1551-7616

e-ISSN

1551-7616

Number of pages

6

Pages from-to

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Publisher name

AIP Conference Proceedings

Place of publication

New York

Event location

Olomouc

Event date

Aug 31, 2022

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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