Publication detail

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

LÉDL, M. GALVÁNKOVÁ, L. DROCHYTKA, R.

Original Title

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

Type

conference paper

Language

English

Original Abstract

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.

Keywords

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

Authors

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

Released

16. 8. 2019

Publisher

Trans Tech Publications

Location

Switzerland

ISBN

978-3-0357-1550-7

Book

Solid State Phenomena

ISBN

1012-0394

Periodical

Solid State Phenomena

Year of study

296

Number

1

State

Swiss Confederation

Pages from

173

Pages to

179

Pages count

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"
}