Figure 7
From: Stability of volcanic ash aggregates and break-up processes
Aggregate strength σcr of artificial aggregates have been computed, following the models of Johnson et al.49 and Rumpf48. Solid salt bridge neck radii represent SEM analysis results or our artificial aggregates. (a) shows aggregate strengths for tensile stress case and aggregate porosities ε of 0.5 and 0.8. (b) shows aggregate strengths for compressive stress case and aggregate porosity of 0.5 and 0.8.
