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Best references for the QPA of Portland cement

Published online by Cambridge University Press:  01 August 2022

T. G. Fawcett Open the ORCID record for T. G. Fawcett [Opens in a new window] ,
J. R. Blanton ,
S. N. Kabekkodu ,
T. N. Blanton Open the ORCID record for T. N. Blanton [Opens in a new window] ,
J. Lyza  and
D. Broton
T. G. Fawcett*
Affiliation:
International Centre for Diffraction Data, Newton Square, PA, USA
J. R. Blanton
Affiliation:
International Centre for Diffraction Data, Newton Square, PA, USA
S. N. Kabekkodu
Affiliation:
International Centre for Diffraction Data, Newton Square, PA, USA
T. N. Blanton
Affiliation:
International Centre for Diffraction Data, Newton Square, PA, USA
J. Lyza
Affiliation:
Levy Technical Laboratories, Edward C. Levy Co., Portage, IN, USA
D. Broton
Affiliation:
CTL Group, Skokie, IL, USA
*
a)Author to whom correspondence should be addressed. Electronic mail: dxcfawcett@outlook.com
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Abstract

Cement references were reviewed and whole pattern methods were developed for the quantitative phase analysis (QPA) of Type I Portland Cements. A set of control references were established for phase identification and quantitative analysis using laboratory diffractometers. Both RIR and Rietveld whole pattern fitting methods were used in the analyses. A block refined, parameter restricted, Rietveld method produced the best QPA results by comparison with known mixtures. Similar to prior literature findings, care has to be taken because of the severe peak overlap of the major calcium silicate and calcium aluminate phases in Portland cement and the complexity of the chemistry and structures involved. Two of the four major phases identified are doped supercells and the major C3S phase is also disordered.

Type
Proceedings Paper
Information
Powder Diffraction , Volume 37 , Issue 2 , June 2022 , pp. 68 - 75
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Copyright
Copyright © The Author(s), 2022. Published by Cambridge University Press on behalf of International Centre for Diffraction Data

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References

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