ABSTRACT
Macroscopically, forces of about 10 kN can be applied to the sample. In Figure 8 only data up to a force corresponding to a compaction stress of about 13 kN/m2
are presented, whereas the maximum stress that can be applied to the microscopic sample can only reach about 1 kN/m2. Nevertheless, the macroscopic experiment reveals for beginning compaction a linear increase of the compaction force, similar to the one observed both
in the microscopic experiment and in the simulation. At further compaction, the force increases faster than linearly in agreement with (Brendel et al. 2003).
