Sampling and compression test of stone elements

The test involves extracting a representative volume of natural stone from a structural element within the building under investigation. The sample is then cut by precision grinding to obtain a 50×50×50 mm or 70×70×70 mm prism. Once prepared, the specimen is sent to a state-authorized laboratory for compression strength testing until failure.
In order to ensure an accurate mechanical characterization of the stone, particularly in the case of sedimentary rocks, prismatic samples should be prepared in both parallel and orthogonal orientations relative to anisotropy planes of the stone.

Reference standard: UNI EN 1926.