Journal
CONSTRUCTION AND BUILDING MATERIALS
Volume 291, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2021.123265
Keywords
Steel slag; Cement-based composites; Basic oxygen furnace slag (BOFS); Electric arc furnace slag (EAFS); Recycled aggregates; Supplementary cementitious material (SCM)
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Funding
- Coordencao de Aperfeicoamento de Pessoal de Nivel Superior - Brasil (CAPES) [001]
- Fundacao de Amparo a Pesquisa do Estado de Minas Gerais (FAPEMIG)
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq)
- Federal University of Vicosa (UFV)
- Federal University of Ouro Preto (UFOP)
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Steel slags, by-products in the steel industry, consist of calcium, silicon, ferric, aluminum, and magnesium oxides. Despite concerns over expansive compounds in cement-based composites, mitigation strategies have been proposed. Activating techniques enhance the binding properties of steel slag powder for potential use as SCM.
Steel slags are by-products generated in high volumes in the steel industry. Their main constituents are calcium, silicon, ferric, aluminum, and magnesium oxides. Larnite, alite, brownmillerite, and ferrite are also found. The presence of expansive compounds cause concern when used in cement-based compos-ites; however, mitigating routes have been proposed. Activation techniques improve the binding proper-ties of steel slag powder, potentiating its use as a supplementary cementitious material (SCM). As an aggregate, steel slag presents good morphological and mechanical properties. Promising mechanical and durability performances in cement-based composites encourage further research to promote the use of steel slag. (c) 2021 Elsevier Ltd. All rights reserved.
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