2020
DOI: 10.1002/sia.6797
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Carbonation study and determination of cement to sand ratio in hardened cement mortar by X‐ray photoelectron spectroscopy

Abstract: The determination of cement and sand content in an aged cement mortar is a challenging problem for civil engineers. Techniques like x‐ray diffraction (XRD), thermogravimetric analysis (TGA) and electrochemical impedance spectroscopy (EIS) are well established, which can give some insight of the hydrated products. The present study is an attempt to use x‐ray photoelectron spectroscopy (XPS) technique for the evaluation of ordinary Portland cement (OPC), sand (aggregate) composition and carbonation study in hard… Show more

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Cited by 7 publications
(4 citation statements)
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“…The XPS narrow spectra of C 1s, Mn 2p, O 1s, and Si 2p for blank and 1% Mn doped CM samples are shown in Figure 3 , and the spectra of the other Mn doped CM samples are provided in Supplementary Figure S1 . The C 1s peaks identified at 284.8, 285.7, and 289.6 eV were the binding energies of contamination adventitious carbon, which accounted for the C-C, C-O-C, and O-C=O components, respectively ( Kalina et al, 2014 ; Singh et al, 2020 ). The bonding energy situated at 293.2 eV accounted for C-F, which may form due to the presence of fluorite in the RMs.…”
Section: Resultsmentioning
confidence: 99%
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“…The XPS narrow spectra of C 1s, Mn 2p, O 1s, and Si 2p for blank and 1% Mn doped CM samples are shown in Figure 3 , and the spectra of the other Mn doped CM samples are provided in Supplementary Figure S1 . The C 1s peaks identified at 284.8, 285.7, and 289.6 eV were the binding energies of contamination adventitious carbon, which accounted for the C-C, C-O-C, and O-C=O components, respectively ( Kalina et al, 2014 ; Singh et al, 2020 ). The bonding energy situated at 293.2 eV accounted for C-F, which may form due to the presence of fluorite in the RMs.…”
Section: Resultsmentioning
confidence: 99%
“…In the O 1s spectrum, the 529.8 eV peak energy was attributed to Ca-O and Mn-O, and the 532.0 eV peak energy was attributed to Si-O ( Wang et al, 2016 ). The typical peak at 102.7–102.5 eV was assigned to SiO 2 , and the peak at 101.9–101.7 eV was assigned to Si in belite ( Estokova et al, 2018 ; Singh et al, 2020 ). The other O 1s spectrum for Mn doped CM samples is provided in Supplementary Figure S2 .…”
Section: Resultsmentioning
confidence: 99%
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“…28 The energy resolution of the XPS instrument used in the present study lies in the range of 0.4-0.6 eV, and the details are mentioned elsewhere. 29 The quantification in terms of atomic concentration of the individual elements of multiple oxidation states of a particular element can be calculated according to the formula:…”
Section: Instrumentationmentioning
confidence: 99%