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The influence of silica species configuration on the hydration of alkali-activated ground granulated blast-furnace slag
Chalmers University of Technology, Department of Civil and Environmental Engineering.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Fluid and Experimental Mechanics.
Swedish NMR.
Chalmers University of Technology, Department of Civil and Environmental Engineering.
2014 (English)In: Second International Conference on Advances in Chemically-Activated Materials: CAM'2014, Changsha, Hunan, China, June 1 - 3, 2014 / [ed] C. Shi; X. Shen, Bagneux: Rilem publications, 2014, p. 309-318Conference paper, Published paper (Refereed)
Abstract [en]

There are indications on that the initial setting time is dependent on the relative ratio of Na2O to SiO2 when sodium silicate solutions (Na2SiO3) are used for the alkali-activation of ground granulated blast-furnace slag (GGBS). One possible reason for this is that the ratio (called modulus) not only influences the pH but also the viscosity of the solution. The viscosity is, in turn dependent on the structures in the liquid. Therefore, we have investigated the structure of sodium silicate solutions of different moduli by infrared spectroscopy (IR) and silicon nuclear magnetic resonance (Si-29-NMR). The results, which show that the silica configuration is highly dependent on the modulus, will be discussed in relation to the initial setting time of corresponding measurements on GGBS hydration

Place, publisher, year, edition, pages
Bagneux: Rilem publications, 2014. p. 309-318
Series
R I L E M Proceedings, ISSN 1461-1147 ; 92
National Category
Applied Mechanics
Research subject
Experimental Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-30992Local ID: 50547dd1-ff77-431d-9c1f-3358e06dba59ISBN: 978-2-35158-142-1 (print)OAI: oai:DiVA.org:ltu-30992DiVA, id: diva2:1004221
Conference
International Conference on Advances in Chemically-Activated Materials : 01/06/2014 - 03/06/2014
Note
Godkänd; 2014; 20150928 (andbra)Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2017-11-25Bibliographically approved

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Ramser, Kerstin

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
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  • vancouver
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  • de-DE
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  • nn-NB
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Output format
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