20.500.12556/DiRROS-16244 Alkali activation of metallurgical slags reactivity, chemical behavior, and environmental assessment Alkali-activated materials (AAMs) represent a promising alternative to conventional building materials and ceramics. Being produced in large amounts as aluminosilicate-rich secondary products, such as slags, they can be utilized for the formulation of AAMs. Slags are partially crystalline metallurgical residues produced during the high temperature separation of metallic and non-metallic materials in the steelmaking processes. In the present study, the electric arc furnace carbon or stainless steel slag (EAF) and secondary metallurgical slag such as ladle furnace basic slag (LS) were used as precursors in an alkali-activation process. EAF slag, with its amorphous fraction of about 56%, presented higher contents of soluble Si and Al species with respect to ladle slag R (35%). However, both are suitable to produce AAM. The leaching behavior shows that all the release values are below the regulation limit. All the bivalent ions (Ba, Cd, Cu, Ni, Pb, and Zn) are well immobilized in a geopolymeric matrix, while amphoteric elements, such as As and Cr, show a slight increase of release with respect to the corresponding slag in alkaline and aqueous environments. In particular, for Sb and As of AAM, release still remains below the regulation limits, while Mo presents an increase of leaching values that slightly exceeds the limit for landfill non-dangerous waste. slag aluminosilicate materials chemical reactivity cold consolidation alkali activation leaching test open access žlindra alumosilikatni materiali kemijska reaktivnost hladna utrditev alkalijska aktivacija testiranje izlužkov odprti dostop true false true Molecular Diversity Preservation International Angleški jezik Slovenski jezik © 2021 by the authors. Licensee MDPI, Basel, Switzerland. Neznano 2023-02-10 12:33:23 2023-05-22 10:02:36 2023-05-23 03:46:21 0000-00-00 00:00:00 2021 0 0 Nasl. z nasl. zaslona; Opis vira z dne 14. 1. 2021; Št. članka 639; str. 1-19 iss. 3 Vol. 14 2021 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2021-01-30 620.1/2 1996-1944 10.3390/ma14030639 49408515 https://www.mdpi.com/1996-1944/14/3/639 Open access 1 bb237932-a936-11ed-b359-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=21650 RAZ_Lancellotti_Isabella_2021.pdf RAZ_Lancellotti_Isabella_2021.pdf 1 B079326BF7836ED56FB673476DE83E5C 691e591d33fd2231668894f216eef922574860a69dd29c3a346003616d9ad67d 85b82e3c-a937-11ed-b359-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=21651 Zavod za gradbeništvo Slovenije 0 0 0