3D microstructure:
• Porosity, defects, cracks
• Grain size and shape
• Packing structure
• Mixing, segregation

Aggregates, coatings:
• Coating thickness
• Microstructure, porosity
• Distribution of components/binder 

• Particle/agglomerate breakage behavior

Micro Computed Tomography (Werth Messtechnik GmbH)
with a dual X-ray tube system:
• nano transmission tube (160 kV), minimum voxel size of 500 nm
• micro transmission tube (240 kV), minimum voxel size of 1.5 µm 
• high-resolution large-area detector (400x400 mm/ 4000x4000 px)

In situ compression test cell (Deben): 
• force and displacement measurement during uniaxial compression/
   tension of a sample (single particles, packing, layer, coating) 
• CT imaging of the microstructure during stressing (consolidation,
   crack initiation and propagation)