Detail publikačního výsledku

The Impact of Fly Ash after SNCR Treated with Tannin-Based Products on AAC Production

LÉDL, M.; GALVÁNKOVÁ, L.; DROCHYTKA, R.

Originální název

The Impact of Fly Ash after SNCR Treated with Tannin-Based Products on AAC Production

Anglický název

The Impact of Fly Ash after SNCR Treated with Tannin-Based Products on AAC Production

Druh

Stať ve sborníku v databázi WoS či Scopus

Originální abstrakt

This paper is focused on the effect of treatment of fly ash after SNCR with tannin on AAC production in order to reduce or stop ammonia leakage from the fresh mixture due to its alkalinity. A pure form of tannin and a tannin-based product „Farmatan“ were used as a treatment in dosage ranging from 0,5 g – 3 g of agent per 1 kg of fly ash. Efficient dosage was determined at 2 wt.% of fly ash by the speed of an indicator change due to gaseous ammonia diluted in water. The rheological properties of fresh mixtures were observed by consistency test in Viskomat showing that Farmatan causes delay of hydration. The results of bulk density and compressive strength testing revealed that Farmatan causes an increase of bulk density and at higher amount decreases the compressive strength because of thermal crack formation due to combined effect of delayed hydration and thixotropy. Using XRD analysis there were no differences in phase composition observed.

Anglický abstrakt

This paper is focused on the effect of treatment of fly ash after SNCR with tannin on AAC production in order to reduce or stop ammonia leakage from the fresh mixture due to its alkalinity. A pure form of tannin and a tannin-based product „Farmatan“ were used as a treatment in dosage ranging from 0,5 g – 3 g of agent per 1 kg of fly ash. Efficient dosage was determined at 2 wt.% of fly ash by the speed of an indicator change due to gaseous ammonia diluted in water. The rheological properties of fresh mixtures were observed by consistency test in Viskomat showing that Farmatan causes delay of hydration. The results of bulk density and compressive strength testing revealed that Farmatan causes an increase of bulk density and at higher amount decreases the compressive strength because of thermal crack formation due to combined effect of delayed hydration and thixotropy. Using XRD analysis there were no differences in phase composition observed.

Klíčová slova

Autoclaved aerated concrete; fly ash; selective non-catalytic reduction; tobermorite; ammonia; tannin

Klíčová slova v angličtině

Autoclaved aerated concrete; fly ash; selective non-catalytic reduction; tobermorite; ammonia; tannin

Autoři

LÉDL, M.; GALVÁNKOVÁ, L.; DROCHYTKA, R.

Rok RIV

2020

Vydáno

16.08.2019

Nakladatel

Trans Tech Publications

Místo

Switzerland

ISBN

978-3-0357-1550-7

Kniha

Solid State Phenomena

ISSN

1012-0394

Periodikum

Solid State Phenomena

Svazek

296

Číslo

1

Stát

Švýcarská konfederace

Strany od

173

Strany do

179

Strany počet

7

URL

https://search.proquest.com/docview/2274004429?pq-origsite=gscholar&fromopenview=true

BibTex

@inproceedings{BUT155581,
  author="Matěj {Lédl} and Lucie {Dlabajová} and Rostislav {Drochytka}",
  title="The Impact of Fly Ash after SNCR Treated with Tannin-Based Products on AAC Production",
  booktitle="Solid State Phenomena",
  year="2019",
  journal="Solid State Phenomena",
  volume="296",
  number="1",
  pages="173--179",
  publisher="Trans Tech Publications",
  address="Switzerland",
  doi="10.4028/www.scientific.net/SSP.296.173",
  isbn="978-3-0357-1550-7",
  issn="1012-0394",
  url="https://search.proquest.com/docview/2274004429?pq-origsite=gscholar&fromopenview=true"
}