Publication detail

Investigation of the Joule's effect in electrically enhanced alkali-activated aluminosilicates

FIALA, L. ROVNANÍK, P. ČERNÝ, R.

Original Title

Investigation of the Joule's effect in electrically enhanced alkali-activated aluminosilicates

Type

journal article in Web of Science

Language

English

Original Abstract

Alkali-activated aluminosilicates [AAA] can be viewed as eco-friendly, economically advantageous building materials due to the fact that some industrial by products available for a reasonable price, such as blastfurnace slag or fly ash, can be used as their main components. Therefore, AAA can be considered as good competitors to widely used cement-based materials. AAA are in general electrically non-conductive. However, adding a sufficient amount of electrically conductive admixtures significantly decreases their electrical resistivity which broaden application possibilities. Enhanced materials can be used as self-heating or self-sensing systems. In the paper, AAA samples made of blastfurnace slag, water glass as an alkali activator, filler represented by three fractions of sand and electrically conductive admixtures were prepared. The ability to generate Joule’s heat is tested on samples loaded by an external DC electric source by means of measurements of temperature by K-type thermocouples in chosen points on samples. The obtained experimental data make it possible to identify a promising AAA which exhibits a sufficient increase of temperature in room conditions and can be utilized well in practical applications.

Keywords

alkali-activated aluminosilicates; electrically conductive admixtures; electrical conductivity; temperature

Authors

FIALA, L.; ROVNANÍK, P.; ČERNÝ, R.

Released

1. 5. 2017

Publisher

STOWARZYSZENIE PRODUCENTOW CEMENTU

Location

Krakow

ISBN

1425-8129

Periodical

cement-wapno-beton

Year of study

22

Number

3

State

Republic of Poland

Pages from

201

Pages to

210

Pages count

10

BibTex

@article{BUT138961,
  author="FIALA, L. and ROVNANÍK, P. and ČERNÝ, R.",
  title="Investigation of the Joule's effect in electrically enhanced alkali-activated aluminosilicates",
  journal="cement-wapno-beton",
  year="2017",
  volume="22",
  number="3",
  pages="201--210",
  issn="1425-8129"
}