Show simple item record

dc.contributor.authorAponte Hernández, Diego Fernando
dc.contributor.authorSoto Martín, Oriol
dc.contributor.authorValls del Barrio, Susanna
dc.contributor.authorBarra Bizinotto, Marilda
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental
dc.identifier.citationAponte, D.F. [et al.]. Ladle steel slag in activated systems for construction use. "Minerals", Agost 2020, vol. 10, núm. 8, p. 687:1-687:12.
dc.description.abstractThe construction industry needs to reduce greenhouse gases, in which cement production is currently responsible for generating between 4% and 6% of the total CO2 released into the atmosphere. Similarly, many industries produce large amounts of solid waste, which often have low value-added applications or are directly taken to landfills, with consequent negative environmental impacts. One of these industries is the steel industry, which in 2016 generated 18.4 Mt of slag (melting and refining slag) among all European Union countries. In terms of refining steel slag (ladle or white slag), it is estimated that for each ton of steel, between 20 and 30 kg of slag is produced; that is, in 2016, more than 700,000 tons of white slag were generated. It is also known that this material has cementitious properties and can be used as a precursor in alkaline activation processes. Depending on the concentrations used of the activating agent, a higher or lower mechanical performance of the developed materials can be obtained. This work studied the alkali activation of a ladle slag used to manufacture mortars, subjecting them to an initial curing of 24 h at different temperatures (20, 40, and 70 °C). Sodium silicate and sodium hydroxide were used as activating agents, using percentages of Na2O between 5% and 10% to obtain an optimal dosage of the activator. The physical and mechanical properties of the mortars were evaluated at different ages of curing. In addition, monitoring was undertaken of linear shrinkage due to drying and the mineralogical changes due to activation and curing time.
dc.rightsAttribution 3.0 Spain
dc.subjectÀrees temàtiques de la UPC::Enginyeria civil::Materials i estructures
dc.subject.otherLadle furnace slag
dc.subject.otherAlkali-activated slag
dc.subject.otherMechanical properties
dc.subject.otherMineralogical analysis
dc.titleLadle steel slag in activated systems for construction use
dc.subject.lemacAcer -- Reciclatge
dc.contributor.groupUniversitat Politècnica de Catalunya. MATCAR - Materials de Construcció i Carreteres
dc.description.peerreviewedPeer Reviewed
dc.rights.accessOpen Access
dc.description.versionPostprint (published version)
local.citation.authorAponte, D.F.; Soto, O.; Valls, S.; Barra, M.

Files in this item


This item appears in the following Collection(s)

Show simple item record

Attribution 3.0 Spain
Except where otherwise noted, content on this work is licensed under a Creative Commons license : Attribution 3.0 Spain