Corrosion resistance of steel reinforcements embedded in alkali activated ground granulated SiMn slag mortars

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Title: Corrosion resistance of steel reinforcements embedded in alkali activated ground granulated SiMn slag mortars
Authors: Navarro, Rosa | García Alcocel, Eva María | Sánchez, Isidro | Garcés, Pedro | Zornoza, Emilio
Research Group/s: Durabilidad de Materiales y Construcciones en Ingeniería y Arquitectura
Center, Department or Service: Universidad de Alicante. Departamento de Ingeniería Civil | Universidad de Alicante. Departamento de Construcciones Arquitectónicas
Keywords: SiMn slag | Alkali activation | Corrosion | Carbonation | Chloride | Steel
Knowledge Area: Ingeniería de la Construcción | Construcciones Arquitectónicas
Issue Date: 10-Jan-2020
Publisher: Elsevier
Citation: Construction and Building Materials. 2020, 230: 116917. doi:10.1016/j.conbuildmat.2019.116917
Abstract: The corrosion process of steel reinforcements embedded in alkali activated SiMn slag mortars was investigated. NaOH and waterglass were used as alkali activators of SiMn slag. The steel reinforced mortars were subjected to two aggressive environments: carbonation and chloride ingress. Carbonation progressed quicker for the binder activated with NaOH, decreasing the rate with the concentration. However, during the corrosion of the steels embedded in the mortars, both activators showed a similar behaviour. Mortars prepared with waterglass exhibited higher chloride migration coefficients, which decreased as the activator concentration increased. In a chloride contaminated ambient, steel embedded in mortars prepared with NaOH offered lower corrosion rate levels and it increased with the activator concentration.
Sponsor: The authors wish to thank the Spanish Ministry of Economy and Competitiveness and European Union (FEDER) for project funding (BIA 2014-58194-R).
ISSN: 0950-0618 (Print) | 1879-0526 (Online)
DOI: 10.1016/j.conbuildmat.2019.116917
Language: eng
Type: info:eu-repo/semantics/article
Rights: © 2019 Elsevier Ltd.
Peer Review: si
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Appears in Collections:INV - DMCIA - Artículos de Revistas

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