EFFECT OF TEMPERATURE ON THE ALKALI ACTIVATION OF CONTINUOUS CASTING STAINLESS STEEL SLAG

Continuous casting slag from stainless steel production containing non-hydraulic minerals was activated in alkaline solutions at elevated temperature by steam curing. A steam curing cycle of 24 hours including 16 hours of steam curing was used to provide the elevated temperatures of 60 °C, 70 °C, 80 °C, 90 °C, 100 °C and 110 °C. The compressive strength of the mortars prepared using the slag was found to increase steadily with the increase in the steam curing temperature. Na activators generated higher compressive strength than K activator though Na activated mortars showed higher porosity. Presence of CSH as reaction product was evident by thermal and FT-IR analysis.

ISBN:978-80-247-5015-6

Publication year:2013

BOF-keylabel:yes

IOF-keylabel:yes

Authors from:Higher Education