Multifunctional cement composites strain and damage sensors applied on reinforced concrete (RC) structural elements
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Título: | Multifunctional cement composites strain and damage sensors applied on reinforced concrete (RC) structural elements |
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Autor/es: | Baeza, F. Javier | Galao Malo, Oscar | Zornoza, Emilio | Garcés, Pedro |
Grupo/s de investigación o GITE: | Durabilidad de Materiales y Construcciones en Ingeniería y Arquitectura | Grupo de Ensayo, Simulación y Modelización de Estructuras (GRESMES) |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Ingeniería Civil |
Palabras clave: | Strain sensing | Cement composite | Carbon nanofibers, CNF | Carbon fiber | Damage sensing |
Área/s de conocimiento: | Mecánica de Medios Continuos y Teoría de Estructuras | Ingeniería del Terreno | Ingeniería de la Construcción |
Fecha de publicación: | 6-mar-2013 |
Editor: | MDPI |
Cita bibliográfica: | Materials. 2013, 6(3): 841-855. doi:10.3390/ma6030841 |
Resumen: | In this research, strain-sensing and damage-sensing functional properties of cement composites have been studied on a conventional reinforced concrete (RC) beam. Carbon nanofiber (CNFCC) and fiber (CFCC) cement composites were used as sensors on a 4 m long RC beam. Different casting conditions (in situ or attached), service location (under tension or compression) and electrical contacts (embedded or superficial) were compared. Both CNFCC and CFCC were suitable as strain sensors in reversible (elastic) sensing condition testing. CNFCC showed higher sensitivities (gage factor up to 191.8), while CFCC only reached gage factors values of 178.9 (tension) or 49.5 (compression). Furthermore, damage-sensing tests were run, increasing the applied load progressively up to the RC beam failure. In these conditions, CNFCC sensors were also strain sensitive, but no damage sensing mechanism was detected for the strain levels achieved during the tests. Hence, these cement composites could act as strain sensors, even for severe damaged structures near to their collapse. |
Patrocinador/es: | The authors want to acknowledge the Spanish Ministry of Science and Innovation for their economic support on this research (No. Mat 2009-10866). |
URI: | http://hdl.handle.net/10045/33758 |
ISSN: | 1996-1944 |
DOI: | 10.3390/ma6030841 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © 2013 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/). |
Revisión científica: | si |
Versión del editor: | http://dx.doi.org/10.3390/ma6030841 |
Aparece en las colecciones: | INV - DMCIA - Artículos de Revistas INV - GRESMES - Artículos de Revistas INV - BIMAEC - Artículos de Revistas |
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