Publication detail

Investigation Of Electric And Thermal Properties Of Alkali-Activated Aluminosilicates With A CNT Admixture

ZMEŠKAL, O. TRHLÍKOVÁ, L. POSPÍŠIL, J. FIALA, L. FLORIÁN, P.

Original Title

Investigation Of Electric And Thermal Properties Of Alkali-Activated Aluminosilicates With A CNT Admixture

Type

journal article in Web of Science

Language

English

Original Abstract

The paper is focused on measurements of electric and thermal properties of alkali-activated aluminosilicates (AAAs) with a carbon nanotube (CNT) admixture. Such composites, fabricated from blast-furnace slag, quartz sand, water glass as an alkali activator, a small amount of electrically conductive CNT admixture and water exhibit better electric and thermal properties than the reference material without the CNT. Such an enhancement opens new practical applications, such as designing snow-melting, de-icing or self-sensing systems that do not need any external sensors to detect the current condition of the building's materials. Moreover; the economic aspect is more favourable in the case of AAA than that of Portland cement-based materials. The DC (direct current) electric properties are determined experimentally from the current-voltage (I-V) characteristics, the dielectric properties by means of impedance spectroscopy. Dielectric measurements allow us to determine the contribution of the individual components to the conductivity of the composite. The electric and thermal conductivities in the transverse direction were 16.16 mu S.m(-1) and 0.907 W.m(-1).K-1 for 0 % of CNT and 34.46 mu S.m(-1) and 1.298 W.m(-1).K-1 for 0.4 % of CNT, respectively.

Keywords

Alkali-activated aluminosilicates; Carbon nanotubes; electric and dielectric properties; Thermal properties

Authors

ZMEŠKAL, O.; TRHLÍKOVÁ, L.; POSPÍŠIL, J.; FIALA, L.; FLORIÁN, P.

Released

20. 4. 2020

Publisher

University of Chemistry and Technology, Prague

Location

PRAGUE 6

ISBN

1804-5847

Periodical

CERAMICS-SILIKATY

Year of study

64

Number

2

State

Czech Republic

Pages from

180

Pages to

189

Pages count

10

URL

http://www.ceramics-silikaty.cz/index.php?page=cs_detail_doi&id=1313

Full text in the Digital Library

http://hdl.handle.net/11012/187343

BibTex

@article{BUT163944,
  author="Oldřich {Zmeškal} and Lucie {Trhlíková} and Jan {Pospíšil} and Lukáš {Fiala} and Pavel {Florián}",
  title="Investigation Of Electric And Thermal Properties Of Alkali-Activated Aluminosilicates With A CNT Admixture",
  journal="CERAMICS-SILIKATY",
  year="2020",
  volume="64",
  number="2",
  pages="180--189",
  doi="10.13168/cs.2020.0007",
  issn="1804-5847",
  url="http://www.ceramics-silikaty.cz/index.php?page=cs_detail_doi&id=1313"
}