Durability in Alkaline Environment of a Fiber Optic Sensor Bonded at the Surface of Reinforcing Bars for Distributed Strain Measurements in Concrete Structures
| Autor: | N. Delaplanque, S. Chataigner, L. Gaillet, M. Quiertant, K. Benzarti, A. Rolland, X. Chapeleau, A. Saravia Flores |
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| Přispěvatelé: | Structures Métalliques et à Cables (MAST-SMC ), Université Gustave Eiffel, Expérimentation et modélisation pour le génie civil et urbain (MAST-EMGCU), Laboratoire Navier (NAVIER UMR 8205), École des Ponts ParisTech (ENPC)-Centre National de la Recherche Scientifique (CNRS)-Université Gustave Eiffel, Centre d'Etudes et d'Expertise sur les Risques, l'Environnement, la Mobilité et l'Aménagement - Direction Ouest (Cerema Direction Ouest), Centre d'Etudes et d'Expertise sur les Risques, l'Environnement, la Mobilité et l'Aménagement (Cerema), Structure et Instrumentation Intégrée (COSYS-SII ), Statistical Inference for Structural Health Monitoring (I4S), Inria Rennes – Bretagne Atlantique, Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria)-Département Composants et Systèmes (COSYS), Université Gustave Eiffel-Université Gustave Eiffel, Piervincenzo Rizzo, Alberto Milazzo |
| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: |
CONFERENCE
STRAIN MEASUREMENTS FRP REBARS ALKALINE ENVIRONMENT ALCALI REACTION TENSION DURABILITY DURABILITE [SPI.MECA]Engineering Sciences [physics]/Mechanics [physics.med-ph] BOND BEHAVIOR BETON RENFORCE CONCRETE BETON ARME DE FIBRES DISTRIBUTED OPTICAL FIBER SENSOR FIBRE OPTIQUE COMPORTEMENT MECANIQUE CAPTEUR ITALIE ARMATURE |
| Zdroj: | Lecture Notes in Civil Engineering European Workshop on Structural Health Monitoring (EWSHM 2022) European Workshop on Structural Health Monitoring (EWSHM 2022), Jul 2022, Palerme, Italy. pp.506-515, ⟨10.1007/978-3-031-07258-1_52⟩ Lecture Notes in Civil Engineering ISBN: 9783031072574 |
| Popis: | International audience; Distributed Optical Fiber Sensors (DOFS) are gaining interest for structural health monitoring applications. Recently, they have been successfully used to monitor the strain profiles at the interface between concrete and steel or composite rebars during pullout tests. In the framework of durability studies on Glass Fiber-Reinforced Polymer reinforcing bars (rebars), this method offers interesting perspectives for monitoring the evolution of the concrete/rebar bond behavior under accelerated ageing conditions. However, the durability of the bonded DOFS instrumentation itself should be investigated in a preliminary stage, to assess possible alteration of its performance over aging, which would raise questions about the validity of strain measurements in the long term. This article presents the first results of an experimental program aiming to address this specific issue. In this work, steel rebars were equipped with bonded optical fibers. Half-length of the instrumented rebars was subjected to hydrothermal ageing by immersion in an alkaline solution, while the remaining length was exposed to standard laboratory conditions. After exposure, the rebars were tested in tension and the DOFS strain profiles were simultaneously measured. These strain profiles were then compared to reference measurements performed before ageing, providing insights on the influence of the ageing conditions on the response of the DOFS. |
| Databáze: | OpenAIRE |
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