Using EAF Slag to Create Sustainable Cement
Author Information
Author(s): Adesanya Elijah, Isteri Visa, Baral Aniruddha, Rößler Christiane, Hanein Theodore, Yliniemi Juho
Primary Institution: University of Oulu
Hypothesis
Can Electric Arc Furnace (EAF) slag be effectively used as a raw material in cement clinker production to enhance sustainability?
Conclusion
The study found that using EAF slag in cement production can reduce carbon emissions and improve hydration rates.
Supporting Evidence
- EAF slag was used to produce hydraulic alite (47%)-ferrite (32%)-belite (20%) cement.
- The effect of carbonation and gypsum on hydration was studied.
- Hydration of ferrite led to formation of Fe/Al-rich siliceous hydrogarnet.
- Leaching of Cr, Mo, and V originating from slag was under limits after hydration.
Takeaway
This study shows that we can use waste from steel production to make cement, which is better for the environment and helps make stronger buildings.
Methodology
The study synthesized ferrite-rich clinker using EAF slag and assessed its hydration behavior and carbonation curing effects.
Limitations
The study did not explore long-term performance or environmental impacts of using EAF slag in cement.
Digital Object Identifier (DOI)
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