Basic physical and electrical properties of geopolymers with graphite powder

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F20%3A00342883" target="_blank" >RIV/68407700:21110/20:00342883 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1063/5.0026385" target="_blank" >https://doi.org/10.1063/5.0026385</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/5.0026385" target="_blank" >10.1063/5.0026385</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Basic physical and electrical properties of geopolymers with graphite powder

Popis výsledku v původním jazyce

Construction materials are required to exhibit good mechanical properties, sufficient durability, and resistance to the negative influence of the environment, such as resistance of the moistened material to freeze-thaw cycles, resistance to intake and crystallization of salts or significant changes in temperature. Besides, it exists the requirement for the design of materials with additional properties, so-called multifunctional materials. Optimization of electrical properties of mostly electrically non-conductive construction materials opens up a wide range of their new applicability, such as in self-heating or self-sensing applications. In the case of self-heating, sufficiently high electrical conductivity of the optimized construction material must be achieved. Determination of electrical properties is the first crucial step for the estimation of self-heating ability. This paper is focused on experimental determination of basic physical and electrical properties in DC/AC regime of the composite based on alkali-activated slag with graphite admixture in the amount of 6.25 wt.%. Basic physical properties were determined by gravimetric method and helium pycnometry. DC parameters were identified by measurements of the resistance and calculations of the electrical conductivity. AC parameters were identified by LCR bridge. It was observed that electrical properties of geopoymer enhanced by graphite powder in amount of 6.25 wt.% ensure self-heating ability of such composite which can be classified as multifunctional.

Název v anglickém jazyce

Basic physical and electrical properties of geopolymers with graphite powder

Popis výsledku anglicky

Construction materials are required to exhibit good mechanical properties, sufficient durability, and resistance to the negative influence of the environment, such as resistance of the moistened material to freeze-thaw cycles, resistance to intake and crystallization of salts or significant changes in temperature. Besides, it exists the requirement for the design of materials with additional properties, so-called multifunctional materials. Optimization of electrical properties of mostly electrically non-conductive construction materials opens up a wide range of their new applicability, such as in self-heating or self-sensing applications. In the case of self-heating, sufficiently high electrical conductivity of the optimized construction material must be achieved. Determination of electrical properties is the first crucial step for the estimation of self-heating ability. This paper is focused on experimental determination of basic physical and electrical properties in DC/AC regime of the composite based on alkali-activated slag with graphite admixture in the amount of 6.25 wt.%. Basic physical properties were determined by gravimetric method and helium pycnometry. DC parameters were identified by measurements of the resistance and calculations of the electrical conductivity. AC parameters were identified by LCR bridge. It was observed that electrical properties of geopoymer enhanced by graphite powder in amount of 6.25 wt.% ensure self-heating ability of such composite which can be classified as multifunctional.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/GA19-11516S" target="_blank" >GA19-11516S: Geopolymery pro sofistikované aplikace ve stavebnictví</a><br>

Návaznosti

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

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název statě ve sborníku

AIP Conference Proceedings 2275

ISBN

978-0-7354-4005-0

ISSN

—

e-ISSN

1551-7616

Počet stran výsledku

6

Strana od-do

—

Název nakladatele

AIP Publishing, APL, the American Institute of Physics

Místo vydání

Melville, NY

Místo konání akce

Eger

Datum konání akce

2. 9. 2020

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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