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Proceedings Paper

Preliminary research on monitoring the durability of concrete subjected to sulfate attack with optical fibre Raman spectroscopy
Author(s): Yanfei Yue; Yun Bai; P. A. Muhammed Basheer; John J. Boland; Jing Jing Wang
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Paper Abstract

Formation of ettringite and gypsum from sulfate attack together with carbonation and chloride ingress have been considered as the most serious deterioration mechanisms of concrete structures. Although Electrical Resistance Sensors and Fibre Optic Chemical Sensors could be used to monitoring the latter two mechanisms in situ, currently there is no system for monitoring the deterioration mechanisms of sulfate attack and hence still needs to be developed. In this paper, a preliminary study was carried out to investigate the feasibility of monitoring the sulfate attack with optical fibre Raman spectroscopy through characterizing the ettringite and gypsum formed in deteriorated cementitious materials under an ‘optical fibre excitation + spectroscopy objective collection’ configuration. Bench-mounted Raman spectroscopy analysis was also used to validate the spectrum obtained from the fibre-objective configuration. The results showed that the expected Raman bands of ettringite and gypsum in the sulfate attacked cement paste have been clearly identified by the optical fibre Raman spectroscopy and are in good agreement with those identified from bench-mounted Raman spectroscopy. Therefore, based on these preliminary results, there is a good potential of developing an optical fibre Raman spectroscopy-based system for monitoring the deterioration mechanisms of concrete subjected to the sulfate attack in the future.

Paper Details

Date Published: 19 April 2013
PDF: 14 pages
Proc. SPIE 8692, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2013, 86920K (19 April 2013); doi: 10.1117/12.2015153
Show Author Affiliations
Yanfei Yue, Univ. College London (United Kingdom)
Yun Bai, Univ. College London (United Kingdom)
P. A. Muhammed Basheer, Queen's Univ. Belfast (United Kingdom)
John J. Boland, Trinity College Dublin (Ireland)
Jing Jing Wang, Trinity College Dublin (Ireland)


Published in SPIE Proceedings Vol. 8692:
Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2013
Jerome Peter Lynch; Chung-Bang Yun; Kon-Well Wang, Editor(s)

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