| Abstract: | A transition criterion for the erosion of rocks and concrete materials Depending on loading regime and material type, mineralic materials behave either elastic or elastic‐plastic if eroded by solid particles. A simple transition number, X, that combines fracture toughness and compressive strength, can be used to distinguish between both modes. Conventionally ‘hard’ materials, namely granite and feldspars, own low X‐values and respond elastic. Conventionally ‘soft’ material, namely limestone, mortar and schist, are characterised by high X‐values and show an elastic‐plastic response. |
