Effect of Microwave Radiation on the Properties of Hydrogel, Cork, Perlite, and Ceramsite

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dc.contributor.authorPrůša, Davidcs
dc.contributor.authorŠťastník, Stanislavcs
dc.contributor.authorSvobodová, Kateřinacs
dc.contributor.authorŠuhajda, Karelcs
dc.contributor.authorSochorová, Zuzanacs
dc.coverage.issue8cs
dc.coverage.volume10cs
dc.date.accessioned2025-03-26T11:43:18Z
dc.date.available2025-03-26T11:43:18Z
dc.date.issued2024-08-22cs
dc.description.abstractThe present work analyzes the effect of releasing physically bound water from hydrogel, cork, perlite, and ceramsite on materials exposed to microwave radiation and subsequently investigates possible changes in the physical properties of these materials (water absorption and thermal conductivity coefficient). The release of physically bound water from individual materials has potential practical applications in materials engineering, for example, in the internal curing of concrete, where individual aggregates could, under the influence of microwave radiation, release water into the structure of the concrete and thus further cure it. Experimental analysis was carried out with samples of the above-mentioned materials, which were first weighed and then immersed in water for 24 h. Then, they were weighed again and exposed to microwave radiation. After exposure, the samples were weighed again, left immersed in water for 24 h, and weighed again. The focus of the study was on the ability of the aggregates to release water due to microwave radiation and on the changes in the properties (water absorption, thermal conductivity coefficient) of these materials when exposed to microwave radiation. The samples were further monitored by digital microscopy for possible changes in the surface layer of the materials. The hydrogels show the highest water absorption (1000%) and the fastest water release (45 min to complete desiccation). After the release of water due to microwave radiation, their ability to absorb water is maintained. Of interest, however, is that in the case of almost complete removal of water from the soaked hydrogel, the original powdered state of the hydrogel is not obtained, but the outcome has rather a solid structure. In the case of cork, the water absorption depends on the fraction of the material.en
dc.formattextcs
dc.format.extent1-20cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationGels. 2024, vol. 10, issue 8, p. 1-20.en
dc.identifier.doi10.3390/gels10080543cs
dc.identifier.issn2310-2861cs
dc.identifier.orcid0000-0002-6529-4009cs
dc.identifier.orcid0000-0001-7842-6966cs
dc.identifier.other189551cs
dc.identifier.researcheridAAD-6344-2019cs
dc.identifier.scopus54403777800cs
dc.identifier.urihttps://hdl.handle.net/11012/250201
dc.language.isoencs
dc.publisherMDPIcs
dc.relation.ispartofGelscs
dc.relation.urihttps://www.mdpi.com/2310-2861/10/8/543cs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/2310-2861/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjecthydrogelen
dc.subjectcorken
dc.subjectceramsiteen
dc.subjectperliteen
dc.subjectmicrowave radiationen
dc.titleEffect of Microwave Radiation on the Properties of Hydrogel, Cork, Perlite, and Ceramsiteen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-189551en
sync.item.dbtypeVAVen
sync.item.insts2025.03.26 12:43:18en
sync.item.modts2025.03.26 11:33:32en
thesis.grantorVysoké učení technické v Brně. Fakulta stavební. Ústav pozemního stavitelstvícs
thesis.grantorVysoké učení technické v Brně. . Lesnická a dřevařská fakultacs
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