Influence of recycled slag aggregates on the conductivity and strain sensing capacity of carbon fiber reinforced cement mortars

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Title: Influence of recycled slag aggregates on the conductivity and strain sensing capacity of carbon fiber reinforced cement mortars
Authors: Baeza, F. Javier | Galao Malo, Oscar | Vegas, Iñigo | Cano, M. | Garcés, Pedro
Research Group/s: Durabilidad de Materiales y Construcciones en Ingeniería y Arquitectura | Grupo de Ensayo, Simulación y Modelización de Estructuras (GRESMES)
Center, Department or Service: Universidad de Alicante. Departamento de Ingeniería Civil
Keywords: EFA slag | Recycled aggregates | CFRCC | Percolation | Carbon fibre | Electrical resistivity
Knowledge Area: Mecánica de Medios Continuos y Teoría de Estructuras | Ingeniería de la Construcción
Issue Date: 30-Sep-2018
Publisher: Elsevier
Citation: Construction and Building Materials. 2018, 184: 311-319. doi:10.1016/j.conbuildmat.2018.06.218
Abstract: The electrical resistivity of carbon fiber reinforced cement composites (CFRCC) has been widely studied for the functional applications of these composites. CFRCC with enhanced electrical properties can be used as strain or damage sensor, heating or deicing material, or anode in different electrochemical techniques, like chloride extraction or cathodic protection. In this work, carbon fiber reinforced cement mortars have been prepared using a conductive aggregate produced from the valorization of Electric Arc Furnace slag (EAF slag). Cement based mortars containing EAF slag aggregates revealed lower resistivity; hence, the carbon fiber percolation threshold decreased. Additionally, the strain sensing capacity of those composites with conductive aggregates was also enhanced, indicating similar sensitivity and lower dispersion than equivalent mortars containing limestone aggregates. The best linear regressions between the electrical and mechanical measures were achieved for EAF slag cement mortar containing 1.29 vol% of oxidized carbon fibers.
Sponsor: This research was partially funded by the Basque Regional Government (Hazitek 2015 Programme number: ZL-2015/00163).
URI: http://hdl.handle.net/10045/77315
ISSN: 0950-0618 (Print) | 1879-0526 (Online)
DOI: 10.1016/j.conbuildmat.2018.06.218
Language: eng
Type: info:eu-repo/semantics/article
Rights: © 2018 Elsevier Ltd.
Peer Review: si
Publisher version: https://doi.org/10.1016/j.conbuildmat.2018.06.218
Appears in Collections:INV - GRESMES - Artículos de Revistas
INV - DMCIA - Artículos de Revistas

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