Project information

submitted by
Florian Kleiner

Co-Authors
Florian Kleiner, Christiane Rößler, Christian Matthes

Mentors
Christiane Rößler

Faculty:
Civil and Environmental Engineering

Degree programme:
– Other –

Type of project presentation
Film

Semester
Winter semester 2019/20

Project description

The combination of two state-of-the-art analytical methods allows a deep insight into the pore structure of hardened cement over a large scale (millimetres to nanometres). And therefore, information about transport processes of media in concrete. Sub-µ X-ray computer tomography (Sub-µ X-ray CT) non-destructively radiates through test specimens of various sizes from the size of a pin head to drill cores with a diameter of 20 cm. However, the resolution is limited to about one µm³. To overcome the resolution limit also in the third dimension, a modern scanning electron microscope with a focused ion beam (SEM-FIB) can be used. This makes it possible to cut a cube with an edge length of 10 µm into thin slices. Afterwards, the microstructure can be digitally reproduced with a resolution of less than 5 x 5 x 10 nm and then evaluated.

Email: florian.kleiner[at]uni-weimar.de