Influence of ammonia content in SNCR fly ash on phase composition and morphology of autoclaved aerated concrete (AAC)
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26310%2F18%3APU126621" target="_blank" >RIV/00216305:26310/18:PU126621 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.4028/www.scientific.net/SSP.276.167" target="_blank" >https://doi.org/10.4028/www.scientific.net/SSP.276.167</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.4028/www.scientific.net/SSP.276.167" target="_blank" >10.4028/www.scientific.net/SSP.276.167</a>
Alternative languages
Result language
angličtina
Original language name
Influence of ammonia content in SNCR fly ash on phase composition and morphology of autoclaved aerated concrete (AAC)
Original language description
In production of AAC the fly ash was used as a source of SiO2 for many years. Now, after introducing a selective non-catalytic reduction (SNCR) technology to coal combustion process, the fly ash contain ammonia in a form of soluble salts, such as NH4HSO4 and (NH4)2SO4, which causes problems during manufacturing the AAC. Among all the influence of ammonia ions to the phase composition of the final product was not fully described. The main aim of this contribution is to describe the influence of ammonia to phase composition and morphology of autoclaved aerated concrete (AAC). For preparing AAC in laboratory conditions, the fly ash with various content of ammonia was used. The amount of ammonia before and after the hydrothermal reaction was measured by VIS spectrofotometry. The phase composition of prepared samples was determined by means of X-ray diffractometry and confirmed by TG-DTA analysis. The influence of the ammonia to the morphology of final products was studied by scanning electron microscopy.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
20101 - Civil engineering
Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Binders, Materials and Technologies in Modern Construction IV
ISBN
978-3-0357-1348-0
ISSN
1662-9779
e-ISSN
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Number of pages
6
Pages from-to
167-172
Publisher name
Trans Tech Publications
Place of publication
Switzerland
Event location
Brno
Event date
Dec 7, 2017
Type of event by nationality
EUR - Evropská akce
UT code for WoS article
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