Yue, Y;
Wang, JJ;
Basheer, PAM;
Bai, Y;
(2020)
In-situ monitoring of early hydration of clinker and Portland cement with optical fiber excitation Raman spectroscopy.
Cement and Concrete Composites
, 112
, Article 103664. 10.1016/j.cemconcomp.2020.103664.
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Abstract
This paper explores the potential of using optical fiber Raman spectroscopy for continuously monitoring the early hydration of cement thanks to its superb capacities for characterizing wet samples and poorly-structured calcium-silicate-hydrate (C-S-H) as well as its excellent remote sensing competence. A bespoke optical fiber excitation Raman spectrometer with a 632.8 nm laser wavelength under an “optical fiber excitation + spectrometer objective collection” configuration was established and applied. The ongoing hydration of a clinker and a Portland cement (PC) was then monitored during their first 8 h of hydration. The main hydration products, in particular, C-S-H and ettringite & monosulfate (AFt & AFm), have been successfully identified and continuously monitored in situ. The findings from the optical fiber Raman were well supported by bench-mounted Raman, X-ray Diffraction (XRD) and Isothermal Conduction Calorimetry (ICC) tests. The results presented in this paper show a great potential of optical fiber Raman spectroscopy for future civil engineering applications.
Type: | Article |
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Title: | In-situ monitoring of early hydration of clinker and Portland cement with optical fiber excitation Raman spectroscopy |
Open access status: | An open access version is available from UCL Discovery |
DOI: | 10.1016/j.cemconcomp.2020.103664 |
Publisher version: | http://dx.doi.org/10.1016/j.cemconcomp.2020.103664 |
Language: | English |
Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
Keywords: | Bench-mounted Raman spectroscopy, Cement, Clinker, Hydration, Optical fiber excitation Raman spectroscopy |
UCL classification: | UCL 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-pp.ucl.ac.uk/id/eprint/10105783 |
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