Characterization of Czech coal combustion ashes and their hydrated products
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F19%3A43918791" target="_blank" >RIV/60461373:22310/19:43918791 - isvavai.cz</a>
Alternative codes found
RIV/60461373:22810/19:43918791
Result on the web
<a href="https://www.tretiruka.cz/media-a-odpady/waste-forum/archiv/a2019/waste-forum-3-2019/" target="_blank" >https://www.tretiruka.cz/media-a-odpady/waste-forum/archiv/a2019/waste-forum-3-2019/</a>
DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Characterization of Czech coal combustion ashes and their hydrated products
Original language description
Czech coal ashes and their hydrated products were characterized primary by X-ray diffraction analysis (XRD), followed by X-ray fluorescence analysis (XRF) and scanning electron microscopy (SEM). The aim of this paper was to determine the phase composition including an amorphous content in the selected pulverized coal combustion ashes (PCC FA), sulfocalcic ashes (SC ash, CFBC ash) and in hardened SC ash slurries. Amorphous phase was determined by the internal standard method using XRD. The phase composition of the slurries and its changes occurring during the time-dependent hydration were studied within 90 days. The results showed different phase composition of both types of ashes. It was found that the selected PCC ashes had about 55% of amorphous content and the SC ashes from 47 to 65%. The phase changes could be observed during the first 7 days of hydration by XRD analysis, then the phase composition remained practically constant until the observed 90 days. For the hydrated slurries, the amorphous content was time independent and ranged from 57 – 64%. Furthermore, it was found that the amount of ettringite and the amount of amorphous phase is affected by the amount of water; the higher the water to binder ration, the higher amount of the ettringite and the lower amount of the amorphous phase, respectively. © 2019 Czech Environment Management Center. All rights reserved.
Czech name
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Czech description
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Classification
Type
J<sub>SC</sub> - Article in a specialist periodical, which is included in the SCOPUS database
CEP classification
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OECD FORD branch
20501 - Materials engineering
Result continuities
Project
<a href="/en/project/FV30062" target="_blank" >FV30062: Possibilities of utilization of coal-ash from power stations stored at stock piles</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Waste forum
ISSN
1804-0195
e-ISSN
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Volume of the periodical
2019
Issue of the periodical within the volume
3
Country of publishing house
CZ - CZECH REPUBLIC
Number of pages
11
Pages from-to
276-286
UT code for WoS article
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EID of the result in the Scopus database
2-s2.0-85072552929