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Does Ordinary Portland Cement contain amorphous phase? A quantitative study using an external standard method

Published online by Cambridge University Press:  05 March 2012

D. Jansen ,
Ch. Stabler ,
F. Goetz-Neunhoeffer ,
S. Dittrich  and
J. Neubauer
D. Jansen*
Affiliation:
GeoZentrum Nordbayern, Mineralogy, University Erlangen-Nuremberg, Erlangen 91054, Germany
Ch. Stabler
Affiliation:
GeoZentrum Nordbayern, Mineralogy, University Erlangen-Nuremberg, Erlangen 91054, Germany
F. Goetz-Neunhoeffer
Affiliation:
GeoZentrum Nordbayern, Mineralogy, University Erlangen-Nuremberg, Erlangen 91054, Germany
S. Dittrich
Affiliation:
GeoZentrum Nordbayern, Mineralogy, University Erlangen-Nuremberg, Erlangen 91054, Germany
J. Neubauer
Affiliation:
GeoZentrum Nordbayern, Mineralogy, University Erlangen-Nuremberg, Erlangen 91054, Germany
*
a)Author to whom correspondence should be addressed. Electronic mail: djan@geol.uni-erlangen.de
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Abstract

A suitable external standard method which was first described by O’Connor and Raven (1988) (“Application of the Rietveld refinement procedure in assaying powdered mixtures,” Powder Diffr. 3, 2–6) was used to determine the quantitative phase composition of a commonly used Ordinary Portland Cement (OPC). The method was also applied in order to determine amorphous contents in OPC. Also investigated were the impact of atomic displacement parameters and the microstrain on the calculated amorphous content. The investigations yielded evidence that said parameters do indeed exert an influence on the calculated amorphous content. On the basis of the data produced we can conclude that the method used is entirely to be recommended for the examination of OPC. No significant amorphous content could be proven in the OPC used.

Keywords

Ordinary Portland Cementamorphous contentexternal standardG factor

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Type
Technical Articles
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Powder Diffraction , Volume 26 , Issue 1 , March 2011 , pp. 31 - 38
Copyright
Copyright © Cambridge University Press 2011

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