Detail publikace

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

PRŮŠA, D. ŠŤASTNÍK, S. SVOBODOVÁ, K. ŠUHAJDA, K. SOCHOROVÁ, Z.

Originální název

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

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

The 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.

Klíčová slova

hydrogel; cork; ceramsite; perlite; microwave radiation

Autoři

PRŮŠA, D.; ŠŤASTNÍK, S.; SVOBODOVÁ, K.; ŠUHAJDA, K.; SOCHOROVÁ, Z.

Vydáno

22. 8. 2024

Nakladatel

MDPI

ISSN

2310-2861

Periodikum

Gels

Ročník

10

Číslo

8

Stát

Švýcarská konfederace

Strany od

1

Strany do

20

Strany počet

20

URL

https://www.mdpi.com/2310-2861/10/8/543

Plný text v Digitální knihovně

http://hdl.handle.net/11012/250201

BibTex

@article{BUT189551,
  author="David {Průša} and Stanislav {Šťastník} and Kateřina {Svobodová} and Karel {Šuhajda} and Zuzana {Sochorová}",
  title="Effect of Microwave Radiation on the Properties of Hydrogel, Cork, Perlite, and Ceramsite",
  journal="Gels",
  year="2024",
  volume="10",
  number="8",
  pages="20",
  doi="10.3390/gels10080543",
  issn="2310-2861",
  url="https://www.mdpi.com/2310-2861/10/8/543"
}