Effect of Cement Kiln Bypass Dust on Properties and Hydration of Akali-Activated Slag Mixtures
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26310%2F19%3APU134272" target="_blank" >RIV/00216305:26310/19:PU134272 - isvavai.cz</a>
Výsledek na webu
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DOI - Digital Object Identifier
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Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Effect of Cement Kiln Bypass Dust on Properties and Hydration of Akali-Activated Slag Mixtures
Popis výsledku v původním jazyce
During recent decades, alkali-activated slag (AAS) systems have attracted great scientific interest around the world. Despite many efforts its severe shrinkage and cracking is still a delicate issue. The aim of this work was to partially replace slag by cement kiln bypass dust (CBPD) which, on the basis of its mineralogical composition, would act as an expansive agent (EA) and thus compensate AAS shrinkage. It was observed that volume changes of AAS/CBPD mixtures strongly depended on CBPD dose since low slag replacement levels did not significantly reduce autogenous shrinkage while around 50% of CBPD or more led to severe expansion. Based on X-ray diffraction, this expansion is related to hydrocalumite-type phase formation. The presence of CBPD also totally modified calorimetric response of AAS pastes.
Název v anglickém jazyce
Effect of Cement Kiln Bypass Dust on Properties and Hydration of Akali-Activated Slag Mixtures
Popis výsledku anglicky
During recent decades, alkali-activated slag (AAS) systems have attracted great scientific interest around the world. Despite many efforts its severe shrinkage and cracking is still a delicate issue. The aim of this work was to partially replace slag by cement kiln bypass dust (CBPD) which, on the basis of its mineralogical composition, would act as an expansive agent (EA) and thus compensate AAS shrinkage. It was observed that volume changes of AAS/CBPD mixtures strongly depended on CBPD dose since low slag replacement levels did not significantly reduce autogenous shrinkage while around 50% of CBPD or more led to severe expansion. Based on X-ray diffraction, this expansion is related to hydrocalumite-type phase formation. The presence of CBPD also totally modified calorimetric response of AAS pastes.
Klasifikace
Druh
O - Ostatní výsledky
CEP obor
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OECD FORD obor
20101 - Civil engineering
Návaznosti výsledku
Projekt
<a href="/cs/project/GJ18-12289Y" target="_blank" >GJ18-12289Y: Pokročilý popis šíření trhlin v kompozitech na bázi alkalicky aktivované matrice</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2019
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů