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Characterisation of carbonated Portland cement paste with optical fibre excitation Raman spectroscopy

Yue, Y; Wang, JJ; Basheer, PAM; Boland, JJ; Bai, Y; (2017) Characterisation of carbonated Portland cement paste with optical fibre excitation Raman spectroscopy. Construction and Building Materials , 135 pp. 369-376. 10.1016/j.conbuildmat.2017.01.008. Green open access

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Abstract

This study demonstrates the potential of developing a future Raman spectroscopy-based sensor system for monitoring carbonation of concrete structures. A tailored optical fibre Raman system was developed under the classical 45° geometry with a specific optical fibre assembly acting as the laser excitation-path. This system was then employed to characterise the calcium carbonate polymorphs, i.e. calcite and/or aragonite [ʋ1 (CO32−) at 1086 cm−1], formed in the carbonated PC paste powder. The finding shows a good potential of optical fibre Raman spectroscopy for monitoring the health condition of concrete structures in the future.

Type: Article
Title: Characterisation of carbonated Portland cement paste with optical fibre excitation Raman spectroscopy
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.conbuildmat.2017.01.008
Publisher version: http://doi.org/10.1016/j.conbuildmat.2017.01.008
Language: English
Additional information: © 2017 Elsevier Ltd. All rights reserved. This manuscript version is made available under a Creative Commons Attribution Non-commercial Non-derivative 4.0 International license (CC BY-NC-ND 4.0). This license allows you to share, copy, distribute and transmit the work for personal and non-commercial use providing author and publisher attribution is clearly stated. Further details about CC BY licenses are available at https://creativecommons.org/licenses/. Access may be initially restricted by the publisher.
Keywords: Carbonation; Concrete; Durability; Excitation; Optical fibre; Raman spectroscopy; Structural health monitoring
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Civil, Environ and Geomatic Eng
URI: https://discovery.ucl.ac.uk/id/eprint/1538993
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