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VYŠVAŘIL, M. ROVNANÍKOVÁ, P. KEPPERT, M.
Originální název
Rheological Properties of Alkali-Activated Brick Powder Based Pastes: Effect of Alkali Activator and Silicate Modulus
Typ
článek ve sborníku ve WoS nebo Scopus
Jazyk
angličtina
Originální abstrakt
The rheological behaviour of alkali-activated materials prepared by activation of a brick powder by alkaline solution (alkali + water glass) is described. The influence of the composition of activation solution (NaOH vs. KOH, varied silicate modulus) on the flow properties (yield stress, consistency coefficient, fluidity index) and the evolution of the elastic modulus (G´) and the viscous modulus (G″) over time were studied. The results show that the pastes are thixotropic suspensions with very low yield stress. The potassium activator decreases the yield stress and viscosity of the pastes and retards the polymerization kinetics. The brick pastes become more rigid and more viscous with increasing silicate modulus. This also leads to an acceleration of gel formation in brick pastes.
Klíčová slova
brick powder, alkali activator, silicate modulus, rheology, oscillation, yield stress, dynamic moduli
Autoři
VYŠVAŘIL, M.; ROVNANÍKOVÁ, P.; KEPPERT, M.
Vydáno
20. 6. 2018
ISBN
978-3-0357-1348-0
Kniha
Binders, Materials and Technologies in Modern Construction IV
ISSN
1662-9779
Periodikum
Solid State Phenomena
Ročník
2018
Číslo
276
Stát
Švýcarská konfederace
Strany od
185
Strany do
191
Strany počet
7
BibTex
@inproceedings{BUT148511, author="Martin {Vyšvařil} and Pavla {Rovnaníková} and Martin {Keppert}", title="Rheological Properties of Alkali-Activated Brick Powder Based Pastes: Effect of Alkali Activator and Silicate Modulus", booktitle="Binders, Materials and Technologies in Modern Construction IV", year="2018", journal="Solid State Phenomena", volume="2018", number="276", pages="185--191", doi="10.4028/www.scientific.net/SSP.276.185", isbn="978-3-0357-1348-0", issn="1662-9779" }