Microstructure and mechanical properties of activated high-alumina ferronickel slag with carbide slag and alkaline salts
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27690%2F22%3A10250449" target="_blank" >RIV/61989100:27690/22:10250449 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S2352710222000596" target="_blank" >https://www.sciencedirect.com/science/article/pii/S2352710222000596</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jobe.2022.104046" target="_blank" >10.1016/j.jobe.2022.104046</a>
Alternative languages
Result language
angličtina
Original language name
Microstructure and mechanical properties of activated high-alumina ferronickel slag with carbide slag and alkaline salts
Original language description
Alkali-activated materials have several remarkable advantages over Portland cement particularly in carbon emission and energy consumption. However, less work has focus on the feasibility of preparing geopolymers from high-alumina ferronickel slag (AFS) with alkaline salts as activators. This article reports the microstructure and mechanical properties of activated high-alumina ferronickel slag (AAFS) with a combination of carbide slag (CS) and Na2CO3 (SC) or Na2SO4 (SS). Results indicate that the AAFS pastes properties are affected by concentration (Na2O equivalent) and nature of activator. The hydration of high-alumina ferronickel slag (FNS) is accelerated as the Na2O equivalent increases from 0.5% to 3% regardless of alkaline salt type, while the early age hydration will be restricted when Na2O equivalent is higher than 3%. The pH of pore solution in SS-activated series is lower than that of SC-activated series. As such, SC-activated FNS pastes have higher exothermic heat in the initial hydration period than SS dosed specimens. Although SC activated pastes have more gel products and smaller critical pore diameter, the SS-activated specimens can achieve higher compressive strength due to compact interfacial transition zone and reasonable hydration products composition.
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
20100 - Civil engineering
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Building Engineering
ISSN
2352-7102
e-ISSN
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Volume of the periodical
49
Issue of the periodical within the volume
49
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
12
Pages from-to
nestrankovano
UT code for WoS article
000776443700002
EID of the result in the Scopus database
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