Study of Fe and V speciation in the glass network of new vitrified EAF-slags to improve their use in low CO2 cements
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https://doi.esrf.fr/10.15151/ESRF-ES-2107743366
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资源简介：
Most low-CO2 cements use ground-granulated blast-furnace slag (GGBS), a Ca-Mg-Al-Si-glass generated as a by-product from iron-making. However, this resource is to become scarce in Europe with the transition of steel industry towards electrified production using directly reduced iron (DRI) and electric arc furnaces (EAF). Vitrification of the new EAF-slags will make them usable as cementitious material similar to GGBS. These new slags, are likely to contain higher amounts of Fe and V than traditional GGBS. The incorporation of Fe in the glass-network will affect its cementitious reactivity, depending on amount, redox state and other ions present. The presence of trace metals such as V represents a further hindrance to cementitious reactivity and their leaching behavior depends on their role in the glass network. Here, we propose to use XANES measurements in combination with µ-XRF to clarify the distribution and speciation of Fe and V in complex, synthetic, slag-glasses with compositions
提供机构：
Universite Toulouse III, Lab Matériaux et Durabilité des Constructions, INSA/UPS Génie Civil 135 Avenue de Rangueil, 31077, Toulouse, FR; CNRS UMR 5563, Laboratoire GET, 14 avenue Edouard Belin, 31400 Toulouse, France; Ecocem Materials, LabCom Orison, 135 Avenue de Rangeuil, 31400, Toulouse, FR; University of Salerno, Dept. of Chemistry and Biology, via Giovanni Paolo II, 132, I-84084, Salerno, ITALY; FEhS Institut , Abteilung Umwelt, Bliersheimer Str. 62, 47229, Duisburg, DE
创建时间：
2028-01-01
