Influence of fluidized bed combustion fly ash admixture on hydrothermal synthesis of tobermorite in the mixture with quartz sand, high temperature fly ash and lime
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F19%3APU135066" target="_blank" >RIV/00216305:26110/19:PU135066 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0950061819324754" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0950061819324754</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.conbuildmat.2019.117033" target="_blank" >10.1016/j.conbuildmat.2019.117033</a>
Alternative languages
Result language
angličtina
Original language name
Influence of fluidized bed combustion fly ash admixture on hydrothermal synthesis of tobermorite in the mixture with quartz sand, high temperature fly ash and lime
Original language description
Autoclaved aerated concrete (AAC) microstructure consists of tobermorite, which is formed in the strongly alkaline and hydrothermal environment of the CaO – SiO2 – Al2O3 – H2O system and is the main contributor to the strength of AAC. This paper addresses the influence of fluidized bed combustion fly ash (FBC ash) on the formation of tobermorite, and the properties and structure of autoclaved composite. To give the best account of the influence of individual input materials, tests are conducted on samples without aluminum powder, therefore the samples did not have a porous structure. Quartz sand, high temperature fly ash and lime were used as input materials, FBC ash was used as an admixture (10, 30 and 50%). The main components were mixed to achieve a molar ratio of 0.73 for CaO/SiO2. The hydrothermal reaction was carried out in saturated water vapor at 190 C for 16 h. The main mineralogical phases and microstructure were examined using X-ray diffraction analysis and Scanning Electron Microscope. It was found that fluidized bed combustion fly ash has significant influence on the formation and crystallization of tobermorite and increases compressive strength of the samples of up to 2.5 times after 30 and 50% additions of FBC ash.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20505 - Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics; filled composites)
Result continuities
Project
<a href="/en/project/GA17-14198S" target="_blank" >GA17-14198S: Kinetics of silicon micro-structure creation in dependence on hydrothermal conditions and type of used materials</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
Construction and building materials
ISSN
0950-0618
e-ISSN
1879-0526
Volume of the periodical
230
Issue of the periodical within the volume
2020
Country of publishing house
GB - UNITED KINGDOM
Number of pages
11
Pages from-to
1-11
UT code for WoS article
000504367400107
EID of the result in the Scopus database
2-s2.0-85072713101