Identification of Phase Composition of Binders from Alkali-Activated Mixtures of Granulated Blast Furnace Slag and Fly Ash

0428870 - ÚGN 2015 RIV CZ eng J - Journal Article
Vlček, J. - Drongová, L. - Topinková, M. - Matějka, V. - Kukutschová, J. - Vavro, Martin - Tomková, V.
Identification of Phase Composition of Binders from Alkali-Activated Mixtures of Granulated Blast Furnace Slag and Fly Ash.
Ceramics - Silikáty. Roč. 58, č. 1 (2014), s. 79-88. ISSN 0862-5468. E-ISSN 1804-5847
Institutional support: RVO:68145535
Keywords : binders * alkali activation * hydration products
Subject RIV: JM - Building Engineering
Impact factor: 0.435, year: 2014
http://www.ceramics-silikaty.cz/2014/pdf/2014_01_079.pdf

The prepared alkali-activated binders (AAB) and composites using suitable latent hydraulic raw materials represent an alternative to materials based on Portland cements. This paper deals with ways how to influence the functional parameters of AAB by setting up mixtures of granulated blast furnace slag (GBFS) and fly ash with selected chemical compositions. In this way the course of hydration process is modified and the phase composition of products of alkali activation is changed as well as their final properties. The amorphous character of the hydration products makes evaluation of the phase composition of hardened AAB difficult and significantly limits the number of experimental techniques suitable to characterise their phase composition. It was observed that measuring the pH of water extracts obtained from the alkali-activated mixtures can give supplementary information about the process of hardening of alkali-activated mixtures of GBFS and fly ash.
Permanent Link: http://hdl.handle.net/11104/0234106