The Stress-Strain State of Normal Sections Rubcon Bending Elements with Mixed Reinforcement

Abstract

A full study of bending elements of building structures made of concrete of various types is impossible without studying the stress-strain state of sections, since without studying the distribution of strains and stresses along the height of the section, it is impossible to give recommendations on the calculation of such elements, this is especially important for polymer concrete elements. Rubber concrete (rubcon) is a polymer concrete with high exploitative characteristics, as well as structures made of it. The addition of dispersed reinforcement allows you to increase the strength of the structure under tension, thereby increasing the crack resistance of the sections of the bent element. To study the operation of normal sections of the rubcon beams, they were tested for pure bending with two equal symmetrically located concentrated loads. As a result, the three stages of the stress-strain state of polymer concrete structures with dispersed reinforcement and without it are similar to reinforced concrete and fiber-concrete bending elements. These studies will determine the prerequisites for the calculation of the normal sections of bending elements made of rubber concrete.