Publication detail

Testing methods of various materials for development of cement composites with low electrical resistance

MELICHAR, J. DROCHYTKA, R. ČERNÝ, V. ŠTEFFAN, P. DOHNÁLEK, P.

Original Title

Testing methods of various materials for development of cement composites with low electrical resistance

Type

conference paper

Language

English

Original Abstract

Our entire planet is filled by communication routes, and as a result of the evolving information technologies, their numbers will continue to grow in the future. Demand for their reliability and hence the importance of protecting related technologies from all kinds of interference is increasing as well. Therefore, it is necessary to develop new materials in order to protect these routes against negative influences of the environment such as the atmospheric discharge. The main aim of the research is to develop and verify the properties of the cement composite that can be applied in systems of protection of building structures against lightning strike and overvoltage. The first step in the development of this material was the selection of suitable feedstocks, which by their presence in the newly developed material will increase its electrical conductivity respectively reduce its electrical impedance. For this purpose, a spectrum of potential raw materials with a high content of metals and organic carbon was chosen. By means of a suitably selected set of laboratory methods which consisted of determination of specific surface, impedance and total organic carbon content (TOC), materials with the most suitable properties were selected and their parameters determined also in a cement matrix. In order to realize this goal specimens with each conducive material as filler were created with incorporated copper electrodes. Impedance has been significantly reduced compared to the reference samples. The lowest values in the tens of ohms were obtained from samples containing carbon grit 0.5–4.0. This fact proves that the tested fillers can be used in order to produce electrically conductive cement composites.

Keywords

Conductive silicates; carbon fillers

Authors

MELICHAR, J.; DROCHYTKA, R.; ČERNÝ, V.; ŠTEFFAN, P.; DOHNÁLEK, P.

Released

18. 1. 2021

Publisher

IOP Publishing

Location

Bristol

ISBN

1757-899X

Periodical

IOP Conference Series: Materials Science and Engineering

Year of study

1039

State

United Kingdom of Great Britain and Northern Ireland

Pages from

1

Pages to

6

Pages count

6

URL

https://iopscience.iop.org/article/10.1088/1757-899X/1039/1/012021

BibTex

@inproceedings{BUT176528,
  author="Jindřich {Melichar} and Rostislav {Drochytka} and Vít {Černý} and Pavel {Šteffan} and Pavel {Dohnálek}",
  title="Testing methods of various materials for development of cement composites with low electrical resistance",
  booktitle="Materials Science and Engineering",
  year="2021",
  journal="IOP Conference Series: Materials Science and Engineering",
  volume="1039",
  number="1039",
  pages="1--6",
  publisher="IOP Publishing",
  address="Bristol",
  doi="10.1088/1757-899X/1039/1/012021",
  issn="1757-899X",
  url="https://iopscience.iop.org/article/10.1088/1757-899X/1039/1/012021"
}