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Utilizing Modern FIB/SEM Technology and EDS for 3D Imaging of Hydrated Alite and its Pore Space
- The exploration of cementitious materials using scanning electron microscopes (SEM) is mainly done using fractured or polished surfaces. This leads to high-resolution 2D-images that can be combined using EDX and EBSD to unveil details of the microstructure and composition of materials. Nevertheless, this does not provide a quantitative insight into the three-dimensional fine structure of forThe exploration of cementitious materials using scanning electron microscopes (SEM) is mainly done using fractured or polished surfaces. This leads to high-resolution 2D-images that can be combined using EDX and EBSD to unveil details of the microstructure and composition of materials. Nevertheless, this does not provide a quantitative insight into the three-dimensional fine structure of for example C-S-H phases. The focused ion beam (FIB) technology can cut a block of material in thin layers of less than 10 nm. This gives us a volume of 1000 μm³ with a voxel resolution of down to 4 x 4 x 10 nm³. The results can be combined with simultaneously acquired EDX data to improve image segmentation. Results of the investigation demonstrate that it is possible to obtain close-to-native 3D-visualisation of the spatial distribution of unreacted C3S, C-S-H and CH. Additionally, an optimized preparation method allows us to quantify the fine structure of C-S-H phases (length, aspect ratio, …) and the pore space.…
Dokumentart: | Konferenzveröffentlichung |
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Verfasserangaben: | Dipl.-Ing. Florian KleinerORCiDGND, Dr.rer.nat. Christiane RößlerORCiDGND |
DOI (Zitierlink): | https://doi.org/10.25643/bauhaus-universitaet.4455Zitierlink |
URN (Zitierlink): | https://nbn-resolving.org/urn:nbn:de:gbv:wim2-20210702-44555Zitierlink |
Titel des übergeordneten Werkes (Englisch): | ERICA-CASH II Final Converence |
Sprache: | Englisch |
Datum der Veröffentlichung (online): | 24.01.2021 |
Datum der Erstveröffentlichung: | 24.01.2021 |
Datum der Freischaltung: | 02.07.2021 |
Veröffentlichende Institution: | Bauhaus-Universität Weimar |
Institute und Partnereinrichtugen: | Fakultät Bauingenieurwesen / Professur Werkstoffe des Bauens |
Seitenzahl: | 2 |
Freies Schlagwort / Tag: | EDX; Focussed Ion Beam; SEM; alite; energy dispersive X-ray spectroscopy |
GND-Schlagwort: | Rasterelektronenmikroskop; Alit |
DDC-Klassifikation: | 500 Naturwissenschaften und Mathematik |
BKL-Klassifikation: | 51 Werkstoffkunde / 51.60 Keramische Werkstoffe, Hartstoffe |
Lizenz (Deutsch): | Creative Commons 4.0 - Namensnennung-Nicht kommerziell (CC BY-NC 4.0) |