Detail publikace

The Technology of Processing of Bed Combustion Fly Ash for Cement Composite Production

ŤAŽKÝ, M. HELA, R. KŘÍŽOVÁ, K.

Originální název

The Technology of Processing of Bed Combustion Fly Ash for Cement Composite Production

Typ

článek ve sborníku ve WoS nebo Scopus

Jazyk

angličtina

Originální abstrakt

Insufficient offer of high-temperature fly ash meeting the requirements of standard EN 450 1 is becoming an increasingly significant problem for concrete technology. This trend is generally caused by relentless effort to green electricity generation and reduce the carbon footprint, leading to the decommissioning of coal-fired power plants and the greening of existing. The most often ways are combustion processes of fluidized-bed and selective non-catalytic nitrogen oxide reduction (SNCR) processes. Thanks to these processes, the demand for this raw material has significantly exceeded its supply in recent years. It is, therefore, more than current to look for ways to use the large amount of ash produced from coal combustion, which is not high-temperature fly ash, but can be classified as a bed combustion fly ash or cinder. The paper aims to show the possible processing and subsequent use of these waste materials for the production of cement composites. The possibilities of grinding these coarse-grained fly ashes and the subsequent impact of their use on the cement composite in comparison with conventional fly ash according to the standard EN 450 from the same sources were verified. The impact of their use on the properties of composites in the fresh and hardened state was analysed, and these impacts were related to, for example, their chemistry, grain morphology, loss on ignition, or fineness.

Klíčová slova

high-temperature fly ash, bed combustion fly ash, grinding, fineness, efficiency index, waste material

Autoři

ŤAŽKÝ, M.; HELA, R.; KŘÍŽOVÁ, K.

Vydáno

14. 10. 2022

Nakladatel

TransTech Publication

Místo

Switzerland

ISSN

1662-9779

Periodikum

Solid State Phenomena

Číslo

337

Stát

Švýcarská konfederace

Strany od

117

Strany do

122

Strany počet

6

URL

https://www.scientific.net/SSP.337.117

BibTex

@inproceedings{BUT182375,
  author="Martin {Ťažký} and Rudolf {Hela} and Klára {Křížová}",
  title="The Technology of Processing of Bed Combustion Fly Ash for Cement Composite Production",
  booktitle="Solid State Phenomena",
  year="2022",
  journal="Solid State Phenomena",
  number="337",
  pages="117--122",
  publisher="TransTech Publication",
  address="Switzerland",
  doi="10.4028/p-8i9o88",
  issn="1662-9779",
  url="https://www.scientific.net/SSP.337.117"
}