Abstract: Contrary to the conventional size effect on rock strength, the reverse size effect refers to a rise in the unconfined compressive strength of small cylindrical rock specimens with an increase in the diameter. The current ...

Abstract: The size dependency of intact rock is of importance to different disciplines, such as civil and mining engineering. One example relates to the design of structures on or within a rock mass for which an estimation of the ...

Abstract: A suite of laboratory testing was performed on Gosford sandstone samples having a range of sizes, including point-load and uniaxial compressive tests. A unified size-effect law (USEL), based on the work by Zdenek Bazant, ...

Abstract: Characterizing the mechanical behavior of jointed rocks is important to understand the behavior of structures in rock masses. Jointed rocks can be composed of persistent and nonpersistent joints where the impact of ...