The Effect of Exposure Conditions on the Properties of Cementitious Composites with Reduced Electrical Resistivity

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F22%3APU146804" target="_blank" >RIV/00216305:26110/22:PU146804 - isvavai.cz</a>

Result on the web

<a href="https://www.mdpi.com/2075-5309/12/12/2124" target="_blank" >https://www.mdpi.com/2075-5309/12/12/2124</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/buildings12122124" target="_blank" >10.3390/buildings12122124</a>

Result language

angličtina

Original language name

The Effect of Exposure Conditions on the Properties of Cementitious Composites with Reduced Electrical Resistivity

Original language description

Cement composite materials with reduced resistivity are specialized building materials, which are constantly pushing their limits. Research into these composites requires a study of the influences of exposure conditions on resistivity. The mixes selected for the purpose of the research included the reference, pure cement mix, and mixes with proportions of graphite under and above the percolation threshold, with two different types of graphite. It was found that the resistivity of all the tested mixes decreases if moisture grows; the influence of moisture is more significant for mixes with graphite proportions below the percolation threshold. The resistivity of all the tested mixes decreases with increasing temperatures; the influence of a higher temperature (50 °C) is more significant for mixes with graphite proportions above the percolation threshold; however, these mixes are, at the same time, more resistant to permanent changes in resistivity caused by frost (−10 °C). It was found that the action of CO2 causes a reduction in resistivity. Mixes with proportions of graphite above the percolation threshold show higher stability when exposed to CO2. Mixes with proportions of graphite below the percolation threshold are extremely sensitive to horizontally oriented pressure loads. Increases in resistivity caused by vertical pressure loads were by 20–40%. The resistivity of the mixes with proportions of graphite above the percolation threshold was less sensitive to the pressure load.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20505 - Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics; filled composites)

Project

<a href="/en/project/GC20-09072J" target="_blank" >GC20-09072J: Structure formation of advanced silicate composites with reduced impedance</a><br>

Continuities

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

Publication year

2022

Confidentiality

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

Name of the periodical

Buildings

ISSN

2075-5309

e-ISSN

—

Volume of the periodical

12

Issue of the periodical within the volume

12

Country of publishing house

CH - SWITZERLAND

Number of pages

22

Pages from-to

1-22

UT code for WoS article

000902224400001

EID of the result in the Scopus database

2-s2.0-85144855073