Davoodabadi, M. orcid.org/0000-0002-9868-5575, Liebscher, M., Sgarzi, M. et al. (5 more authors) (2022) Sulphuric acid sensing by single-walled carbon nanotubes incorporated alkali activated materials. Composites Part B: Engineering, 247. 110323. ISSN 1359-8368
Abstract
Concrete infrastructures are susceptible to corrosion in acidic environments; therefore, the constituent material should be engineered to sense the onset of ion penetration and propagation into the critical sites of the structure. Based on this concept, an intelligent alkali activated chemiresistor has been designed to sense the presence and concentration of sulphuric acid (H2SO4), considering the prerequisites of the structural health monitoring of durable cementitious structures. The proposed nanocomposite developed out of SWCNTs, fly ash, groundgranulated blast-furnace-slag (GGBS), and sodium silicate, is a built-in, low-powered, and ambience-operating structural element. H2SO4 was introduced on the surface of the highly alkaline, porous, and fractured sensor. The chemiresistor responses were distinguishable as the consequence of H2SO4 neutralization and speciation into sulphate (SO2−4 ) and hydrogen sulphate (HSO−4 ) species. This fundamental study can facilitate the future realtime aggressive ion interrogation potential of the SWCNT alkali activated nanocomposites in the construction industry.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2022 Elsevier Ltd. This is an author produced version of a paper subsequently published in Composites Part B: Engineering. Uploaded in accordance with the publisher's self-archiving policy. Article available under the terms of the CC-BY-NC-ND licence (https://creativecommons.org/licenses/by-nc-nd/4.0/). |
Keywords: | Chemiresistors; Smart alkali activated nanocomposites; Single-walled carbon nanotubes; Conductive network; Sensor microstructure; Acid sensing; Concrete corrosion |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Materials Science and Engineering (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 08 Nov 2022 14:09 |
Last Modified: | 29 Sep 2023 00:13 |
Status: | Published |
Publisher: | Elsevier BV |
Refereed: | Yes |
Identification Number: | 10.1016/j.compositesb.2022.110323 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:193030 |
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Filename: JCOMB-D-22-02890 Accepted SWCNT AAM.pdf
Licence: CC-BY-NC-ND 4.0