Abstract Understanding size effects is important to rigorously analyse the behaviour of rocks and rock masses at different scales for applications. A number empirical numerical studies have included on uniaxial compressive strength rocks, but only few focussed triaxial strength. In this study, several tests were conducted granite samples confinements (from 0.2 15 MPa) sizes 30 84 mm in diameter...

Carving rock by indenting sharp objects into the surface under an impact force has been a favored method of fragmentation for millenia . However, as rock gets harder the lifetime of these sharp tools becomes short and, in a compromise hardened bits of rounder contour have become more common, particularly when driven by mechanical power. To better understand the behavior of these newer generatio...

The paper presents summary of the work carried out by the author on the modelling of jointed rock mass with some field applications. The equivalent continuum analyses approach presented attempts to use statistical relations, which are simple and obtained after analyzing a large data from the literature on laboratory test results of jointed rock masses. Systematic investigations were done includ...