Evolution of the particle size distribution of tricalcium silicate during hydration by synchrotron X-ray nano-tomography
Neubauer J, Sowoidnich T, Valentini L, Schulbert C, Naber C, Rößler C, DaSilva J, Bellmann F (2022)
Publication Language: English
Publication Type: Journal article, Original article
Publication year: 2022
Journal
Book Volume: 156
Article Number: 106769
DOI: 10.1016/j.cemconres.2022.106769
Abstract
The particle size distribution of tricalcium silicate (C3S) is essential for the modelling of early C3S hydration kinetics. In this study, this parameter is analysed during the main hydration period until the first 20 h by synchrotron near-field ptychographic (NF-PXCT) and holographic (HXCT) computed nano-tomography. Additionally, X-ray diffraction, 29Si NMR, thermal analysis, scanning electron microscopy, and inductively coupled plasma-optical emission spectroscopy were used to investigate the system evolution. The time-dependent pore solution composition is also provided to gain further information. HXCT and NF-PXCT show comparable values regarding the evolution of the C3S particle size distribution during hydration, indicating that C3S particles smaller than 1.3 μm are completely dissolved after 20 h of hydration. The results can be reasonably reproduced by numerical models if for all particle sizes a constant reacted rim thickness for each degree of hydration is assumed. Data on the aqueous phase composition are also provided.
Authors with CRIS profile
Jürgen Neubauer
Lehrstuhl für Mineralogie
Christian Schulbert
Lehrstuhl für Paläoumwelt
Christoph Naber
Lehrstuhl für Mineralogie
Involved external institutions
European Synchrotron Radiation Facility (ESRF)
France (FR)
Bauhaus-Universität Weimar
Germany (DE)
University of Padua / Universita degli Studi di Padova
Italy (IT)
France (FR)
Bauhaus-Universität Weimar
Germany (DE)
University of Padua / Universita degli Studi di Padova
Italy (IT)
How to cite
APA:
Neubauer, J., Sowoidnich, T., Valentini, L., Schulbert, C., Naber, C., Rößler, C.,... Bellmann, F. (2022). Evolution of the particle size distribution of tricalcium silicate during hydration by synchrotron X-ray nano-tomography. Cement and Concrete Research, 156. https://dx.doi.org/10.1016/j.cemconres.2022.106769
MLA:
Neubauer, Jürgen, et al. "Evolution of the particle size distribution of tricalcium silicate during hydration by synchrotron X-ray nano-tomography." Cement and Concrete Research 156 (2022).
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