The experiments were designed as follows:
-----------------------------------------
- three sample classes were examined ('ice beads poured', 'ice beads tapped', 'RG snow')
  - samples were prepared, and sintered - the sintering time was varied. 

- unconfined compression tests were performed of several samples per sample class and sintering time. 
==> acquired data: force-displacement-curve (.txt)

- computed tomography (CT) images were taken of some of the samples, before compression. 
==> acquired Data: 3D grey images (.aim)

All samples were sintered, compressed and CT-scanned at a temperature of (-10 +/-1)°C


The "Data"-folder contains two subfolders ("Compression_Experiments", "CT_images") for the data of compression tests and CT scans.  
In both folders, the data is first sorted by the sample classes (e.g. "ice_beads_poured") and sintering time (e.g. "5d")
The "Data_structure.csv" file in the "Data"-folder lists the experiments and the corresponding CT images.  

Data:
  - Experiment:
     - sample class:
	- sinterin time:
 	   - files



-------------------------------------------------
Compression experiments, Force-displacement data:
-------------------------------------------------

Uniaxial, unconfined, displacement-controlled compression experiments were performed on cylindrical samples (diameter = 33.6mm, height = 14 mm).
The constant displacement was recorded and the vertical force on the sample (sample was mounted on force measurement device).

The compression file consists of a 36-line header:
	- line 0 - line 24: not filled in. 
	- line 24 - line 35: specification of the compression
		- vertical velocity = 10 mm/s  (ft_velocity_z)
		- sampling rate 10000 Hz (ft_sampling_rate) 
	-line 36: measured parameters 

	==> "dx" : vertical displacement
	==> "Fz" : vertical force 




---------
CT scans:
---------
voxel size = 0.018 mm