Practical methods for the experimental determination of the mechanical characteristics of cement stone under compression

Abstract

In this work, we propose practical methods for the experimental study of the mechanical characteristics and staging of damage accumulation of cement stone based on the joint use of modern testing equipment and a non-contact optical video system for analyzing displacement and deformation fields, as well as a system for recording acoustic emission signals. In the framework of these practical methods, compression tests of cement stone samples of various shapes and geometrical sizes were carried out. The diagrams of deformation and application of loading have been obtained, the mechanical characteristics have been determined, and the staging of damage accumulation in a cement stone has been analyzed. We have received a conclusion about the optimal shape of samples of cement stone, which can be used to determine the prism strength, elastic modulus and Poisson’s ratio using the proposed practical methods.