Early Intervention on the Properties of Steel Slag at High Temperature by Modifier Compound with Tailings: A Feasible Way for Comprehensive Utilization of Solid Wastes |
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| Institution: | ;1.School of Materials Science and Engineering;2.University of Science and Technology Beijing;3.Technical Center of Shougang Environment Protection Industry Department |
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| Abstract: | Steel slag, a by-product of the steel production industry reaches 10%–15% of crude steel output (Motz and Geiseler, 2001). Their main application lies in the field of building materials due to some containing cementitious components, such as dicalcium silicate (C2S) and tricalcium silicate (C3S) (Waligora et al., 2010). However, blended cements with steelmaking slag show low early hydration activity, low compressive strength and bad durability because steel slag generates above 1600 ℃ with the tense and large grain size crystals, consisting of low content of C2S and C3S and high proportions of f-CaO and f-MgO compared with cement clinker. |
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