Title: Effect of curing temperatures on the alkali activation of crystalline continuous casting stainless steel slag
Authors: Salman, Muhammad Salman ×
Cizer, Ozlem
Pontikes, Yiannis
Vandewalle, Lucie
Blanpain, Bart
Van Balen, Koen #
Issue Date: 30-Nov-2014
Publisher: Elsevier BV
Series Title: Construction & Building Materials vol:71 pages:308-316
Abstract: The binding properties of continuous casting stainless steel slag were studied when activated by a combination of Na silicate and 5 M NaOH as well as K silicate and 5 M KOH at steam curing temperatures of 60, 70, 80, 90, 100 and 110 °C. The slag mortars developed moderate compressive strength (~5 MPa) at 60 °C which initially increased moderately and then steeply (>30 MPa) at higher curing temperatures. The porosity of K activated mortars was lower than for Na activated mortars. Thermal and ATR-FTIR analysis showed the formation of C-S-H type of reaction products for both activators at all temperatures, while the formation of brucite was promoted at higher curing temperatures. A much denser hydrated matrix with a better bonding with aggregates was formed at higher curing temperatures. Heavy metal leaching from the slag was dependent on its type and curing temperature of samples.
ISSN: 0950-0618
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

Files in This Item:
File Description Status SizeFormat
pub07331.pdfMain article Published 3449KbAdobe PDFView/Open Request a copy

These files are only available to some KU Leuven Association staff members


All items in Lirias are protected by copyright, with all rights reserved.

© Web of science