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Reduction of Efflorescence in the Alkali Activated Systems

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Abstract:

Alkali metal cations are bound weakly in the structure of alkali activated materials. This fact causes the formation of undesirable efflorescence in humid environment. In this work, the effect of fluoride additives, which reduce significantly the efflorescence, was investigated. The chemical mechanism of selected additive in the modified binder was studied based on XRD, SEMEDX and ICPOES analysis. Also the effect of added fluorides on the mechanical properties of final product was monitored.

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Periodical:

Advanced Materials Research (Volume 1000)

Pages:

318-321

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1000.318

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Online since:

August 2014

Authors:

Rostislav Suchý, Jaromír Pořízka, Jaromír Wasserbauer, Lukáš Kalina*

Keywords:

Alkali Activation, Blast Furnace Slag, Efflorescence

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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