Publication detail

Metakaolin/carbon black geopolymer with enhanced electrical properties

MIZEROVÁ, C. KUSÁK, I. ROVNANÍK, P. BAYER, P.

Original Title

Metakaolin/carbon black geopolymer with enhanced electrical properties

English Title

Metakaolin/carbon black geopolymer with enhanced electrical properties

Type

conference paper

Language

en

Original Abstract

Alkali-activated binders represent a promising material for composites with self-sensing properties both for their lower environmental impact and ability to transfer the electric charge through ionic mobility. Metakaolin geopolymers with carbon black conductive admixture up to 4% were produced to test their electrical properties, mechanical properties and microstructure. Electrical capacitance, resistance and relative permittivity were determined via impedance spectroscopy analysis. Notable enhancement of all mentioned electrical parameters was registered from 2% carbon black content, especially at lower frequency range. Another carbon black addition was rather unreasonable due to only slight improvement in electrical properties but significant drop of compressive strength and unfavourable changes in pore volume and binder microstructure determined by mercury intrusion porosimetry and electron microscope.

English abstract

Alkali-activated binders represent a promising material for composites with self-sensing properties both for their lower environmental impact and ability to transfer the electric charge through ionic mobility. Metakaolin geopolymers with carbon black conductive admixture up to 4% were produced to test their electrical properties, mechanical properties and microstructure. Electrical capacitance, resistance and relative permittivity were determined via impedance spectroscopy analysis. Notable enhancement of all mentioned electrical parameters was registered from 2% carbon black content, especially at lower frequency range. Another carbon black addition was rather unreasonable due to only slight improvement in electrical properties but significant drop of compressive strength and unfavourable changes in pore volume and binder microstructure determined by mercury intrusion porosimetry and electron microscope.

Keywords

geopolymer; metakaolin; carbon black; electrical properties; mechanical properties

Released

20.06.2019

Publisher

IOP Publishing

Location

United Kingdom

ISBN

1757-8981

Periodical

IOP Conference Series: Materials Science and Engineering

Year of study

549

Number

1

State

GB

Pages from

1

Pages to

7

Pages count

7

URL

https://iopscience.iop.org/article/10.1088/1757-899X/549/1/012033

Documents

BibTex 


@inproceedings{BUT157420,
  author="Cecílie {Mizerová} and Ivo {Kusák} and Pavel {Rovnaník} and Patrik {Bayer}",
  title="Metakaolin/carbon black geopolymer with enhanced electrical properties",
  annote="Alkali-activated binders represent a promising material for composites with self-sensing properties both for their lower environmental impact and ability to transfer the electric charge through ionic mobility. Metakaolin geopolymers with carbon black conductive admixture up to 4% were produced to test their electrical properties, mechanical properties and microstructure. Electrical capacitance, resistance and relative permittivity were determined via impedance spectroscopy analysis. Notable enhancement of all mentioned electrical parameters was registered from 2% carbon black content, especially at lower frequency range. Another carbon black addition was rather unreasonable due to only slight improvement in electrical properties but significant drop of compressive strength and unfavourable changes in pore volume and binder microstructure determined by mercury intrusion porosimetry and electron microscope.",
  address="IOP Publishing",
  booktitle="25th International Conference and Meeting of Departments, CONSTRUMAT 2019",
  chapter="157420",
  doi="10.1088/1757-899X/549/1/012033",
  edition="2019",
  howpublished="online",
  institution="IOP Publishing",
  number="1",
  year="2019",
  month="june",
  pages="1--7",
  publisher="IOP Publishing",
  type="conference paper"
}