Publication detail

The suitability of fly ash for use in concrete according to EN 450 based on their particle size

ŤAŽKÝ, M. LABAJ, M. HELA, R.

Original Title

The suitability of fly ash for use in concrete according to EN 450 based on their particle size

Type

conference paper

Language

English

Original Abstract

The by-products of energy industry are nowadays often affected by new limits governing the production of harmful gases discharged into the air. These stricter and stricter criteria are often met by electricity producers by changing the combustion process in thermal power plants itself. Nowadays, the SNCR (selective non-catalytic reduction) application is quite common in the combustion process in order to help reduce the nitrogen oxide emission. This article deals with the primary measures of thermal power plants, which in particular consist of a modified treatment of raw materials (coal) entering the combustion process. These primary measures then often cause the formation of fly ash with unsuitable fineness for the use in concrete according to EN 450. The paper presents the comparison of the physico-mechanical parameters of several fly ashes with a different fineness values. The primary task is to assess the impact of non-suitable granulometry in terms of EN 450 on the other physico-mechanical parameters of fly ashes sampled within the same thermal power plant. Several fly ashes produced in the Czech Republic and surrounding countries were evaluated in this way.

Keywords

fly ash, granulometry, loss on ignition, rheology, workability

Authors

ŤAŽKÝ, M.; LABAJ, M.; HELA, R.

Released

20. 6. 2018

Publisher

Trans Tech Publication

Location

Switzerland

ISBN

978-3-0357-1348-0

Book

Binders, Materials and Technologies in Modern Construction IV

ISBN

1662-9779

Periodical

Solid State Phenomena

Year of study

2018

Number

276

State

Swiss Confederation

Pages from

110

Pages to

115

Pages count

6

BibTex

@inproceedings{BUT145181,
  author="Martin {Ťažký} and Martin {Labaj} and Rudolf {Hela}",
  title="The suitability of fly ash for use in concrete according to EN 450 based on their particle size",
  booktitle="Binders, Materials and Technologies in Modern Construction IV",
  year="2018",
  journal="Solid State Phenomena",
  volume="2018",
  number="276",
  pages="110--115",
  publisher="Trans Tech Publication",
  address="Switzerland",
  doi="10.4028/www.scientific.net/SSP.276.110",
  isbn="978-3-0357-1348-0",
  issn="1662-9779"
}