Properties of nanomodified concrete reinforced With textile reinforcement

Abstract

The results of research into the physical and mechanical properties of modified textile-reinforced concrete are presented. Two types of high-strength reinforcing cloths made of glass and carbon fiber were used for the production of samples. In combination with a cement matrix, reinforcing cloths form a new class of construction structures - textile-reinforced, which are currently one of the most promising materials for use in construction. Compared to traditional reinforced building structures, structures reinforced with textile reinforcement have a number of undeniable advantages, such as high corrosion resistance, lower weight, etc. At the same time, there are modern methods of improving the physical and mechanical properties of concrete, which consist in the application of the mechanism of action of ultra-low concentrations of both organic and inorganic substances, as well as a mixture of fine-grained concrete aggregates. It is obvious that these methods will make it possible to further improve the physical and mechanical properties of textile-reinforced structures. The main goal of the work is to determine the effect of cement matrix activation on the strength of structures reinforced with textile reinforcement, due to the use of ultra-small doses of surface-active substances and a mixture of small concrete aggregates. To achieve the goal, it is necessary to establish how the strength characteristics of textile-reinforced concrete depend on the structure and composition of the concrete matrix. As part of the study, the received samples were tested for transverse bending, their limits of bending and compressive strength, as well as the effectiveness of reinforcement, were determined. It has been proven that samples of modified concrete with textile reinforcement have higher strength characteristics compared to samples of unmodified concrete. In addition, the deformation behavior of textile-reinforced concrete was analyzed. It was determined that the advantage of such concrete is a greater residual bearing capacity, which allows preserving the integrity of the structure without destruction after extreme mechanical effects.