Impact of Carbon Particle Character on the Cement-Based Composite Electrical Resistivity

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dc.contributor.authorČerný, Vítcs
dc.contributor.authorYakovlev, G.I.cs
dc.contributor.authorDrochytka, Rostislavcs
dc.contributor.authorBaránek, Šimoncs
dc.contributor.authorMészárosová, Lenkacs
dc.contributor.authorMelichar, Jindřichcs
dc.contributor.authorHermann, Radekcs
dc.coverage.issue24cs
dc.coverage.volume14cs
dc.date.issued2021-12-07cs
dc.description.abstractElectroconductive cement-based composites are modern materials that are commonly used in many industries such as the construction industry, among others. For example, these materials can be used as sensors for monitoring changes in construction, grounding suspension, and resistance heating materials, etc. The aim of the research presented in this article is to monitor the impact of carbon particle character on cement-based electroconductive composites. Four types of graphite were analyzed. Natural and synthetic types of graphite, with different particle sizes and one with improved electrically conductive properties, were tested. For the analysis of the electrical conductivity of powder raw materials, a new methodology was developed based on the experience of working with these materials. Various types of graphite were tested in pure cement paste (80% cement, 20% graphite) as well as in a composite matrix, which consisted of cement (16.8%), a mixture of silica sand 0–4 mm (56.4%), graphite filler (20.0%) ground limestone (6.7%) and super plasticizers (0.1%). The resistivity and physical-mechanical properties of the composite material were determined. Furthermore, the resistivity of the test samples was measured with a gradual decrease in saturation. It may be concluded that graphite fillers featuring very fine particles and high specific surface are most suitable and most effective for creating electrically conductive silicate composites. The amount, shape and, in particular, the fineness of the graphite filler particles thus creates suitable conditions for the creation of an integrated internal electricity-conductive network. In the case of the use of a coarse type of graphite or purely non-conductive fillers, the presence of an electrolyte, for example, in the form of water, is necessary to achieve a low resistivity. Samples with fine types of graphite fillers achieved stable resistivity values when the sample humidity changed. The addition of graphite fillers caused a large decrease in the strength of the samples.en
dc.formattextcs
dc.format.extent1-35cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationMaterials . 2021, vol. 14, issue 24, p. 1-35.en
dc.identifier.doi10.3390/ma14247505cs
dc.identifier.issn1996-1944cs
dc.identifier.orcid0000-0002-3849-5403cs
dc.identifier.orcid0000-0002-7123-1338cs
dc.identifier.orcid0000-0001-7288-8318cs
dc.identifier.orcid0000-0003-0850-7570cs
dc.identifier.orcid0000-0002-3686-3356cs
dc.identifier.orcid0000-0002-6779-7259cs
dc.identifier.other175651cs
dc.identifier.researcheridF-3067-2019cs
dc.identifier.researcheridG-3166-2019cs
dc.identifier.researcheridAAD-5262-2019cs
dc.identifier.scopus55233647200cs
dc.identifier.scopus54385776700cs
dc.identifier.scopus55983345500cs
dc.identifier.scopus57210643378cs
dc.identifier.urihttp://hdl.handle.net/11012/203310
dc.language.isoencs
dc.publisherMDPIcs
dc.relation.ispartofMaterialscs
dc.relation.urihttps://www.mdpi.com/1996-1944/14/24/7505cs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/1996-1944/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectcement compositeen
dc.subjectgraphite particlesen
dc.subjectlimestoneen
dc.subjectresistivityen
dc.subjectvolume resistivityen
dc.titleImpact of Carbon Particle Character on the Cement-Based Composite Electrical Resistivityen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-175651en
sync.item.dbtypeVAVen
sync.item.insts2025.02.03 15:45:58en
sync.item.modts2025.01.17 15:17:42en
thesis.grantorVysoké učení technické v Brně. Fakulta stavební. Ústav technologie stavebních hmot a dílcůcs
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