Detailed in situ ATR-FTIR spectroscopy study of the early stages of C-S-H formation during hydration of monoclinic C3S

The early stages of tricalcium silicate hydration has been studied by in situ ATR-FTIR spectroscopy. A method for data reduction based on background correction and subtraction of spectra of pure components is presented, which makes it possible to describe the kinetic evolution of the calcium silicat...

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Bibliographic Details
Published in:Cement and concrete research 2021-04, Vol.142, p.106367, Article 106367
Main Authors: Higl, J., Hinder, D., Rathgeber, C., Ramming, B., Lindén, M.
Format: Article
Language:English
Subjects:
ATR-FTIR spectroscopy
C-S-H
C3S
Calcium silicate hydrate
Cement
Data reduction
Fourier transforms
Hydration
In situ
Infrared spectroscopy
NMR spectroscopy
Peak fitting
Spectroscopic analysis
Spectrum analysis
Subtraction
Tricalcium silicate
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Summary:The early stages of tricalcium silicate hydration has been studied by in situ ATR-FTIR spectroscopy. A method for data reduction based on background correction and subtraction of spectra of pure components is presented, which makes it possible to describe the kinetic evolution of the calcium silicate hydrate phase upon hydration with great detail. The results obtained are in full agreement with recently reported, detailed solid-state NMR spectroscopy measurements. As ATR-FTIR spectroscopy does not require any isotope enrichment in order to increase the signal intensities and is a widely available technique, we suggest that our study opens up an avenue towards detailed in situ characterization of hydrating cementitious systems and hydrating systems in general.
ISSN:0008-8846
1873-3948
DOI:10.1016/j.cemconres.2021.106367