NDLI: Application of Fourier transform infrared spectroscopy in cement Alkali quantification

Content Provider	Springer Nature Link
Author	Nasrazadani, S. Springfield, T.
Copyright Year	2013
Abstract	Alkali in cement is responsible for the Alkali–silica-reaction phenomenon that manifests itself in the form of premature cracking in concrete structures such as bridge decks and concrete pavements. X-ray fluorescence spectroscopy (XRF) is commonly used for cement Alkali quantification but a simpler and faster analytical procedure based on Fourier transform infrared spectroscopy (FTIR) has been expanded for this purpose. An analytical absorption band at 750 cm$^{−1}$ in the FTIR spectra of cement samples belonging to Alkali solid solution of tricalcium aluminate [C$_{3}$A(ss)] is used for Alkali quantification. Regression analysis of a plot correlating FTIR absorption band area ratio (750/923 cm$^{−1}$) to equivalent Alkali Na$_{2}$O$_{ e }$ (Na$_{2}$O$_{ e }$ = % Na$_{2}$O + 0.658 × % K$_{2}$O) measured by XRF shows a linear correlation coefficient, R $^{2}$, of 0.97. High Alkali cement samples show a higher microstructural disorder coefficient, C $_{d}$, which is a reactivity criterion introduced by Bachiorrini and co-authors (Proceedings of the seventh international conference on concrete alkali-aggregate reactions‚ 1986) for ASR-susceptible aggregates. Results of this research indicate applicability of FTIR technique to quantitatively predict cement vulnerability to ASR through the $$ A_{{750\,{\text{cm}}^{ - 1} }} $$ to $$ A_{{923\,{\text{cm}}^{ - 1} }} $$ band area ratio and the magnitude of the disorder coefficient (C $_{d}$).
Starting Page	1607
Ending Page	1615
Page Count	9
File Format	PDF
ISSN	13595997
Journal	Materials and Structures
Volume Number	47
Issue Number	10
e-ISSN	18716873
Language	English
Publisher	Springer Netherlands
Publisher Date	2013-07-16
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Spectroscopy X-ray diffraction Alkali–silica-reaction Expansion Alkalis Concrete Structural Mechanics Materials Science Theoretical and Applied Mechanics Operating Procedures, Materials Treatment Civil Engineering Building Materials
Content Type	Text
Resource Type	Article
Subject	Building and Construction Mechanics of Materials Materials Science Civil and Structural Engineering

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