Strain and damage sensing properties on multifunctional cement composites with CNF admixture

Please use this identifier to cite or link to this item: http://hdl.handle.net/10045/34540
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Title: Strain and damage sensing properties on multifunctional cement composites with CNF admixture
Authors: Galao Malo, Oscar | Baeza, F. Javier | Zornoza, Emilio | 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: CNF | Electrical Properties (C) | Cement Paste (D) | Composite (E) | Fiber reinforcement (E)
Knowledge Area: Ingeniería del Terreno | Mecánica de Medios Continuos y Teoría de Estructuras | Ingeniería de la Construcción
Issue Date: 2-Dec-2013
Publisher: Elsevier
Citation: Galao, O., Baeza, F.J., Zornoza, E., Garcés, P., Strain and damage sensing properties on multifunctional cement composites with CNF admixture, Cement & Concrete Composites (2013), doi: http://dx.doi.org/10.1016/j.cemconcomp.2013.11.009
Abstract: Both strain and damage sensing properties on carbon nanofiber cement composites (CNFCC) are reported in the present paper. Strain sensing tests were first made on the material’s elastic range. The applied loading levels have been previously calculated from mechanical strength tests. The effect of several variables on the strain-sensing function was studied, e.g. cement pastes curing age, current density, loading rate or maximum stress applied. All these parameters were discussed using the gage factor as reference. After this first set of elastic experiments, the same specimens were gradually loaded until material’s failure. At the same time both strain and resistivity were measured. The former was controlled using strain gages, and the latter using a multimeter on a four probe setup. The aim of these tests was to prove the sensitivity of these CNF composites to sense their own damage, i.e. check the possibility of fabricating structural damage sensors with CNFCC’s. All samples with different CNF dosages showed good strain-sensing capacities for curing periods of 28 days. Furthermore, a 2%CNF reinforced cement paste has been sensitive to its own structural damage.
Sponsor: Authors want to acknowledge the Spanish Ministry of Science and Innovation for their economic support on this research (Ref: Mat 2009-10866).
URI: http://hdl.handle.net/10045/34540
ISSN: 0958-9465 (Print) | 1873-393X (Online)
DOI: 10.1016/j.cemconcomp.2013.11.009
Language: eng
Type: info:eu-repo/semantics/article
Peer Review: si
Publisher version: http://dx.doi.org/10.1016/j.cemconcomp.2013.11.009
Appears in Collections:INV - DMCIA - Artículos de Revistas
INV - GRESMES - Artículos de Revistas

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