Temperature and humidity influence on the strain sensing performance of hybrid carbon nanotubes and graphite cement composites

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Title: Temperature and humidity influence on the strain sensing performance of hybrid carbon nanotubes and graphite cement composites
Authors: Moral Delgado, Beatriz del | Baeza, F. Javier | Navarro Martínez, Rosa María | Galao Malo, Oscar | Zornoza, Emilio | Vera, Jose | Farcas, Catalina | 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: Cement composites | Multi-walled carbon nanotubes | Graphite | Hybrid fillers | Strain-sensing | Electrical resistivity | Temperature | Moisture
Knowledge Area: Mecánica de Medios Contínuos y Teoría de Estructuras | Ingeniería de la Construcción
Issue Date: 17-May-2021
Publisher: Elsevier
Citation: Construction and Building Materials. 2021, 284: 122786. https://doi.org/10.1016/j.conbuildmat.2021.122786
Abstract: Cement composites with hybrid conductive fillers carbon nanotubes (CNT) and graphite products (GP), have been tested as strain sensors under varying temperatures (0 °C–60 °C), and moisture conditions (0%–100% saturation degree (SD)). Cement pastes with 1% CNT and 5% GP (purified expanded graphite) presented resistivity values between 50 and 75 Ohm·cm, and their strain sensing response was observed to be independent of the loading conditions. However, the gage factor increased up to four times for higher temperatures, and was influenced by the temperature time history. Gage factors were also increased when drying the material up to a SD of 71% or with entirely dried samples.
Sponsor: This project has received funding from the European Union’s Horizon 2020 Research and Innovation Programme under grant agreement ID 760940, and from the Generalitat Valenciana grant AICO/2019/050.
URI: http://hdl.handle.net/10045/115306
ISSN: 0950-0618 (Print) | 1879-0526 (Online)
DOI: 10.1016/j.conbuildmat.2021.122786
Language: eng
Type: info:eu-repo/semantics/article
Rights: © 2021 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
Peer Review: si
Publisher version: https://doi.org/10.1016/j.conbuildmat.2021.122786
Appears in Collections:Research funded by the EU
INV - GRESMES - Artículos de Revistas
INV - DMCIA - Artículos de Revistas
INV - BIMAEC - Artículos de Revistas

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