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Article

Use of Treated Non-Ferrous Metallurgical Slags as Supplementary Cementitious Materials in Cementitious Mixtures

1
Sustainable Materials Management, VITO, 2400 Mol, Belgium
2
IME Process Metallurgy and Metal Recycling, RWTH Aachen University, 52072 Aachen, Germany
3
Łukasiewicz Research Network—Institute of Non-Ferrous Metals, Ul. Sowińskiego 5, 44-100 Gliwice, Poland
*
Author to whom correspondence should be addressed.
Academic Editor: Theodore E. Matikas
Appl. Sci. 2021, 11(9), 4028; https://doi.org/10.3390/app11094028
Received: 31 March 2021 / Revised: 22 April 2021 / Accepted: 25 April 2021 / Published: 28 April 2021
(This article belongs to the Special Issue Eco-Performance of Alternative Binder Systems)
This research investigated the possibility of using metallurgical slags from the copper and lead industries as partial replacement for cement. The studied slags were fayalitic, having a mainly ferro-silicate composition with minor contents of Al2O3 and CaO. The slags were treated at 1200–1300 °C (to reduce the heavy metal content) and then granulated in water to promote the formation of reactive phases. A full hydration study was carried out to assess the kinetics of reactions, the phases formed during hydration, the reactivity of the slags and their strength activity as supplementary cementitious material (SCM). The batch-leaching behaviour of cementitious mixtures incorporating treated slags was also investigated. The results showed that all three slags have satisfactory leaching behaviour and similar performance in terms of reactivity and contribution to the strength development. All slags were found to have mediocre reactivity and contribution to strength, especially at early ages. Nonetheless, they passed the minimum mechanical performance requirements and were found to qualify for use in cement. View Full-Text
Keywords: sustainability; non-ferrous metallurgical slag; supplementary cementitious materials; hydration study; batch leaching sustainability; non-ferrous metallurgical slag; supplementary cementitious materials; hydration study; batch leaching
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MDPI and ACS Style

Gholizadeh Vayghan, A.; Horckmans, L.; Snellings, R.; Peys, A.; Teck, P.; Maier, J.; Friedrich, B.; Klejnowska, K. Use of Treated Non-Ferrous Metallurgical Slags as Supplementary Cementitious Materials in Cementitious Mixtures. Appl. Sci. 2021, 11, 4028. https://doi.org/10.3390/app11094028

AMA Style

Gholizadeh Vayghan A, Horckmans L, Snellings R, Peys A, Teck P, Maier J, Friedrich B, Klejnowska K. Use of Treated Non-Ferrous Metallurgical Slags as Supplementary Cementitious Materials in Cementitious Mixtures. Applied Sciences. 2021; 11(9):4028. https://doi.org/10.3390/app11094028

Chicago/Turabian Style

Gholizadeh Vayghan, Asghar, Liesbeth Horckmans, Ruben Snellings, Arne Peys, Priscilla Teck, Jürgen Maier, Bernd Friedrich, and Katarzyna Klejnowska. 2021. "Use of Treated Non-Ferrous Metallurgical Slags as Supplementary Cementitious Materials in Cementitious Mixtures" Applied Sciences 11, no. 9: 4028. https://doi.org/10.3390/app11094028

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