Detail publikace

Special Grout for Anchoring Steel Elements with High Proportion of Fly Ash Contaminated by Denitrification Process

HODUL, J. DROCHYTKA, R. ŽLEBEK, T.

Originální název

Special Grout for Anchoring Steel Elements with High Proportion of Fly Ash Contaminated by Denitrification Process

Typ

článek ve sborníku ve WoS nebo Scopus

Jazyk

angličtina

Originální abstrakt

This paper focuses on the possible use of fly ash contaminated by denitrification process as filler for special grouts based on epoxy resin. This fly ash is contaminated by combined ammonia ions as a consequence of flue gas denitrification. When mixing this fly ash with water and silica materials, ammonia (NH3) is released, therefore its application in these materials is inappropriate. The use of such fly ash as filler in polymeric substances, e.g. epoxy, polyester or vinyl ester resin, seems to be appropriate. When mixing fly ash with these materials, fly ash particles become coated with a polymeric substance, therefore no toxic ammonia is released. In the experiment, the impact of two kinds of contaminated fly ashes (FA-1, FA-2) and different percentages of filler in a polymer grout was examined on the resulting physical and mechanical properties. It was found that the best properties were by the grout with fly ash from circulating fluidized bed combustion from the Kladno thermal power plant (FA-1) under 45% of filling. This material showed high compressive and three-point bending strength and the flexural modulus was even higher than in the case of the reference material, which contained reference silica sand with optimal round grain shape as filler. Furthermore, chemical resistance of these materials against aggressive liquid solutions used in industrial operations were examined. An ideal grout formula was checked in a cut of an embedded steel element under optical microscope. A pull-out strength test was also performed in the case of the best formulas to determine the anchoring rate of embedded steel rod.

Klíčová slova

Grout, contaminated fly ash, epoxy resin, strength, anchoring, microstructure

Autoři

HODUL, J.; DROCHYTKA, R.; ŽLEBEK, T.

Vydáno

20. 6. 2018

Nakladatel

scientific.net

Místo

Switzerland

ISBN

978-3-0357-1348-0

Kniha

Binders, Materials and Technologies in Modern Construction IV

Edice

Karel Dvořák, Dominik Gazdič and Iveta Hajkova

ISSN

1012-0394

Periodikum

Solid State Phenomena

Číslo

276

Stát

Švýcarská konfederace

Strany od

160

Strany do

166

Strany počet

7

BibTex

@inproceedings{BUT144960,
  author="Jakub {Hodul} and Rostislav {Drochytka} and Tomáš {Žlebek}",
  title="Special Grout for Anchoring Steel Elements with High Proportion of Fly Ash Contaminated by Denitrification Process",
  booktitle="Binders, Materials and Technologies in Modern Construction IV",
  year="2018",
  series="Karel Dvořák, Dominik Gazdič and Iveta Hajkova",
  journal="Solid State Phenomena",
  number="276",
  pages="160--166",
  publisher="scientific.net",
  address="Switzerland",
  doi="10.4028/www.scientific.net/SSP.276.160",
  isbn="978-3-0357-1348-0",
  issn="1012-0394"
}