The PONKCS method applied for time resolved XRD quantification of supplementary cementitious material reactivity in hydrating mixtures with ordinary Portland cement

Beitrag in einer Fachzeitschrift


Details zur Publikation

Autorinnen und Autoren: Naber C, Stegmeyer S, Jansen D, Götz-Neunhoeffer F, Neubauer J
Zeitschrift: Construction and Building Materials
Jahr der Veröffentlichung: 2019
Band: 214
Seitenbereich: 449-457
ISSN: 0950-0618


Abstract

A method is presented to determine the reactivity of supplementary cementitious materials (SCMs) in blended cement systems. To this end, hydration of ordinary Portland cement (OPC) and of OPC blended with the SCMs microsilica and metakaolin has been measured by X-ray diffraction (XRD) and heat flow calorimetry. The quantities of the SCMs in the hydrating mixtures, although of very low crystallinity, could be directly determined by Rietveld refinement employing a method for partially or not known crystal structures (PONKCS method). Considerable amounts of microsilica and metakaolin already react during the first day of hydration in addition to an increased reaction of the cement phases due to the filler effect. The phase assemblage in the hydrated samples is influenced by the SCM present.


FAU-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

Götz-Neunhoeffer, Friedlinde Prof. Dr.
Lehrstuhl für Mineralogie
Jansen, Daniel Dr.
Lehrstuhl für Mineralogie
Naber, Christoph
Lehrstuhl für Mineralogie
Neubauer, Jürgen apl. Prof. Dr.
Lehrstuhl für Mineralogie
Stegmeyer, Samuel
Lehrstuhl für Mineralogie


Forschungsbereiche

Klima und Ressourcen
Forschungsschwerpunkt einer Fakultät: Naturwissenschaftliche Fakultät


Zitierweisen

APA:
Naber, C., Stegmeyer, S., Jansen, D., Götz-Neunhoeffer, F., & Neubauer, J. (2019). The PONKCS method applied for time resolved XRD quantification of supplementary cementitious material reactivity in hydrating mixtures with ordinary Portland cement. Construction and Building Materials, 214, 449-457. https://dx.doi.org/10.1016/j.conbuildmat.2019.04.157

MLA:
Naber, Christoph, et al. "The PONKCS method applied for time resolved XRD quantification of supplementary cementitious material reactivity in hydrating mixtures with ordinary Portland cement." Construction and Building Materials 214 (2019): 449-457.

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Zuletzt aktualisiert 2019-20-07 um 07:19