Metakaolin composite with graphite powder: Material characterization for self-heating potential evaluation
Identifikátory výsledku
Kód výsledku v 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>
Výsledek na webu
<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>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Metakaolin composite with graphite powder: Material characterization for self-heating potential evaluation
Popis výsledku v původním jazyce
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).
Název v anglickém jazyce
Metakaolin composite with graphite powder: Material characterization for self-heating potential evaluation
Popis výsledku anglicky
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).
Klasifikace
Druh
D - Stať ve sborníku
CEP obor
—
OECD FORD obor
20501 - Materials engineering
Návaznosti výsledku
Projekt
<a href="/cs/project/GC22-00987J" target="_blank" >GC22-00987J: Multifunkční necementové kompozity se sníženým dopadem na životní prostředí pro speciální stavební aplikace</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2023
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název statě ve sborníku
AIP Conference Proceedings
ISBN
—
ISSN
1551-7616
e-ISSN
1551-7616
Počet stran výsledku
6
Strana od-do
—
Název nakladatele
AIP Conference Proceedings
Místo vydání
New York
Místo konání akce
Olomouc
Datum konání akce
31. 8. 2022
Typ akce podle státní příslušnosti
WRD - Celosvětová akce
Kód UT WoS článku
—