Effect of Moisture on the Electrical Properties of Portland Cement-Based and Alkali-Activated Slag Mortars

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F23%3APU148875" target="_blank" >RIV/00216305:26110/23:PU148875 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1063/5.0137007" target="_blank" >https://doi.org/10.1063/5.0137007</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/5.0137007" target="_blank" >10.1063/5.0137007</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Effect of Moisture on the Electrical Properties of Portland Cement-Based and Alkali-Activated Slag Mortars

Popis výsledku v původním jazyce

Application of novel functional or smart materials is gaining in importance in recent years. These materials bring new functionalities to ordinary structures such as self-sensing and self-heating properties, energy harvesting or electromagnetic shielding. In order to provide such properties, it is important to have sufficient electrical conductivity, which depends on many factors including ambient conditions such as temperature, relative humidity or water saturation. This paper deals with the effect of water saturation on the electrical properties of two different types of building materials: Portland cement-based and alkali-activated slag mortars. The properties were tested in terms of electrical resistivity measurement with various frequency of the alternating current. The results showed that resistivity decreased with increasing frequency having a significant drop between 1 and 10 kHz. Resistivity also decreased with increasing water saturation degree but at moisture level exceeding 30% the effect of moisture became almost negligible. Alkali-activated slag also showed more than ten times lower resistivity in comparison with Portland cement when the materials were completely dried.

Název v anglickém jazyce

Effect of Moisture on the Electrical Properties of Portland Cement-Based and Alkali-Activated Slag Mortars

Popis výsledku anglicky

Application of novel functional or smart materials is gaining in importance in recent years. These materials bring new functionalities to ordinary structures such as self-sensing and self-heating properties, energy harvesting or electromagnetic shielding. In order to provide such properties, it is important to have sufficient electrical conductivity, which depends on many factors including ambient conditions such as temperature, relative humidity or water saturation. This paper deals with the effect of water saturation on the electrical properties of two different types of building materials: Portland cement-based and alkali-activated slag mortars. The properties were tested in terms of electrical resistivity measurement with various frequency of the alternating current. The results showed that resistivity decreased with increasing frequency having a significant drop between 1 and 10 kHz. Resistivity also decreased with increasing water saturation degree but at moisture level exceeding 30% the effect of moisture became almost negligible. Alkali-activated slag also showed more than ten times lower resistivity in comparison with Portland cement when the materials were completely dried.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20101 - Civil 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

2023

Kód důvěrnosti údajů

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

Název statě ve sborníku

Special Concrete and Composites - 18th International Conference

ISBN

—

ISSN

1551-7616

e-ISSN

—

Počet stran výsledku

6

Strana od-do

1-6

Název nakladatele

AIP Publishing

Místo vydání

Melville, NY, USA

Místo konání akce

Skalský Dvůr

Datum konání akce

13. 10. 2021

Typ akce podle státní příslušnosti

CST - Celostátní akce

Kód UT WoS článku

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