Title: Investigation of the binding potential of continuous casting stainless steel slag by alkali-activation
Authors: Salman, Muhammad ×
Cizer, Özlem
Pontikes, Yiannis
Snellings, Ruben
Vandewalle, Lucie
Blanpain, Bart
Van Balen, Koen #
Issue Date: 17-May-2014
Publisher: Palladian Publications Ltd.
Series Title: Advances in Cement Research vol:26 issue:5 pages:256-270
Abstract: This paper aims at investigating the binding potential of non-hydraulic, crystalline continuous casting (CtCs) stainless steel slag, which is a by-product from stainless steel production process, by alkali activation with NaOH and KOH. Calorimetric analysis of the activated slag showed low cumulative heat evolution at 20 °C. Slag mortars did not harden at this temperature. Considerable enhancements in heat evolution and hardening were observed at 80 °C. The resulting hydrated slag showed formation of C-S-H type reaction products and brucite in thermogravimetric analysis. XRD analysis showed reduction in the amount of γ-C2S and periclase. Elemental mapping showed the presence of Ca, Si and minor amount of Mg in the hydrated phase. An optimum activator dosage of 7.5 M of NaOH or KOH was found to generate the highest amount of reaction products and compressive strength.
ISSN: 0951-7197
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Building Materials and Building Technology Section
Sustainable Metals Processing and Recycling
× corresponding author
# (joint) last author

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