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Journal of Materials Science
Erschienen in: Journal of Materials Science 6/2019

03.12.2018 | Composites

Modeling the evolved microstructure of cement pastes governed by diffusion through barrier shells of C–S–H

verfasst von: W. Zhou, L. Duan, S. W. Tang, E. Chen, A. Hanif

Erschienen in: Journal of Materials Science | Ausgabe 6/2019

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Abstract

A microstructure model combined with diffusion-based mechanism is reconstructed. The objective is to propose a model that could describe the long-term microstructure evolution driven by certain physical mechanisms. With modifications in parametric control, the introduced kinetics is extended to directly consider the particle size distribution (PSD) of cement (alite). The particle impingement is analyzed for the effects of PSD and water-to-cement ratio (w/c ratio). The variations of C–S–H bulk density and hydrates distribution under different temperature are explored in the microstructural modeling. Numerical results for effects of PSD, w/c ratio, temperature, as well as the ambient humidity are obtained and compared with experimental results. Validations especially for early hydration prove that the current model could capture characteristics regarding hydration and evolved microstructure from hours to years.
Vorheriger Artikel Aligned Fe microfiber reinforced epoxy composites with tunable electromagnetic properties and improved microwave absorption
Nächster Artikel Degradation behaviors of PLA-matrix composite with 20 vol% magnesium alloy wires under static loading conditions

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Metadaten
Titel
Modeling the evolved microstructure of cement pastes governed by diffusion through barrier shells of C–S–H
verfasst von
W. Zhou
L. Duan
S. W. Tang
E. Chen
A. Hanif
Publikationsdatum
03.12.2018
Verlag
Springer US
Erschienen in
Journal of Materials Science / Ausgabe 6/2019
Print ISSN: 0022-2461
Elektronische ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-018-03193-x

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