New analytical possibilities for monitoring the phase development during the production of autoclaved aerated concrete

Journal article
(Original article)


Publication Details

Author(s): Schreiner J, Jansen D, Ectors D, Götz-Neunhoeffer F, Neubauer J, Volkmann S
Journal: Cement and Concrete Research
Publication year: 2018
Journal issue: 107
Pages range: 247-252
ISSN: 0008-8846
Language: English


Abstract

This work presents improved analytical methods for both steps of the production process of autoclaved aerated concrete (AAC), the phase development during the hydration before autoclaving and during the autoclaving process itself. The improvement includes new insights into preparation methods of AAC samples for powder diffraction as well as Rietveld refinement strategies. For the first time a new implementation for calculating anisotropic crystal domain sizes is applied to major hydrate phases occurring during AAC production, namely portlandite during the hydration before autoclaving and tobermorite during the autoclaving process. The calculation of anisotropic domain size growth, which can be implemented in the Rietveld environment, is based on crystallographically and geometrically appropriate models. The implementation of calculating anisotropic domain sizes for the Rietveld software TOPAS 5.0 allows a superior Rietveld fit and a more accurate quantification of the phase development. Additionally it enables the tracking of growth mechanism of portlandite during hydration.


FAU Authors / FAU Editors

Ectors, Dominique
Lehrstuhl für Mineralogie
Götz-Neunhoeffer, Friedlinde Prof. Dr.
Lehrstuhl für Mineralogie
Jansen, Daniel Dr.
Lehrstuhl für Mineralogie
Neubauer, Jürgen apl. Prof. Dr.
Lehrstuhl für Mineralogie
Schreiner, Jürgen
Lehrstuhl für Mineralogie


Research Fields

Materials and Light-Matter Interaction
Research focus area of a faculty: Naturwissenschaftliche Fakultät
Neue Materialien und Prozesse
Research focus area of a faculty: Technische Fakultät


How to cite

APA:
Schreiner, J., Jansen, D., Ectors, D., Götz-Neunhoeffer, F., Neubauer, J., & Volkmann, S. (2018). New analytical possibilities for monitoring the phase development during the production of autoclaved aerated concrete. Cement and Concrete Research, 107, 247-252. https://dx.doi.org/10.1016/j.cemconres.2018.02.028

MLA:
Schreiner, Jürgen, et al. "New analytical possibilities for monitoring the phase development during the production of autoclaved aerated concrete." Cement and Concrete Research 107 (2018): 247-252.

BibTeX: 

Last updated on 2019-02-01 at 03:10