Mechanically activated fly ash as a high performance binder for civil engineering

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23640%2F17%3A43931852" target="_blank" >RIV/49777513:23640/17:43931852 - isvavai.cz</a>
Result on the web
<a href="http://hdl.handle.net/11025/29193" target="_blank" >http://hdl.handle.net/11025/29193</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/1742-6596/790/1/012030" target="_blank" >10.1088/1742-6596/790/1/012030</a>

Result language
angličtina
Original language name
Mechanically activated fly ash as a high performance binder for civil engineering
Original language description
This study is aimed for investigation of fly ash binder with suitable properties for civil engineering needs. The fly ash from Czech brown coal power plant Prunerov II was used and mechanically activated to achieve suitable particle size for alkaline activation of hardening process. This process is driven by dissolution of aluminosilicate content of fly ash and by subsequent development of inorganic polymeric network called geopolymer. Hardening kinetics at 25 and 30 °C were measured by strain controlled small amplitude oscillatory rheometry with strain of 0.01 % and microstructure of hardened binder was evaluated by scanning electron microscopy. Strength development of hardened binder was investigated according to compressional and flexural strength for a period of 180 days. Our investigation finds out, that mechanically activated fly ash can be comparable to metakaolin geopolymers, according to setting time and mechanical parameters even at room temperature curing. Moreover, on the bases of long time strength development, achieved compressional strength of 134.5 after 180 days is comparable to performance of high grade Portland cement concretes.
Czech name
—
Czech description
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Project
<a href="/en/project/LO1402" target="_blank" >LO1402: CENTEM+</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
2nd International Conference on Rheology and Modeling of Materials (IC-RMM2)
ISBN
—
ISSN
1742-6596
e-ISSN
neuvedeno
Number of pages
4
Pages from-to
—
Publisher name
IOP Publishing Ltd.
Place of publication
Bristol
Event location
Miskolc, Hungary
Event date
Oct 5, 2015
Type of event by nationality
EUR - Evropská akce
UT code for WoS article
000400612300030

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