# Ultimate Compressive Strains and Reserves of Bearing Capacity of Short RC Columns with Basalt Fiber
## 1 Introduction
The influence of this violation on the process of sulfate erosion of concrete was assessed via a test for sulfate erosion, obtaining ultrasonic data on the process of its damage. [PERSON] et al. [24; 25; 26] proposed ANN artificial neural network algorithms to optimize cement stabilization technology for reinforced earth, which uses inorganic soil, usually taken directly from the construction site, with a small addition of Portland cement as building material. The authors proposed using artificial neural networks (ANNs) to determine the correct proportions of soil, cement, and water in a cement-stabilized rammed earth blend to provide sufficient compressive strength. The developed algorithms allow using relatively simple soil tests to determine the composition of the mixture that provides compressive strength at a level that enables the use of this material in construction. [PERSON] et al. investigated load-bearing structures made of basalt-fiber granular concrete, deeply buried high-stress roadways [27], based on triaxial compression tests. The results of the compression tests show that the yield point of FRC with basalt fiber increases significantly when the mass fraction of basalt fiber is more than 0.4%. The use of basalt fiber can effectively restrain the development of cracks under the influence of three-dimensional stress. [PERSON] et al. studied the effect of basalt fiber content on the mechanical properties and damage of concrete under uniaxial compression [28]. Their research results showed that an appropriate amount of basalt fiber (6 kg/m\({}^{3}\)) could improve the compressive strength of concrete and reduce the risk of crack propagation in the structure. With an increase in basalt fiber content, acoustic emission events are dispersed in concrete, effectively weakening local damage. An experimental study by [PERSON] et al. (2018) studied the effectiveness of basalt fiber as a material to improve shear strength. Ten reinforced concrete beams were tested under a four-point loading system. The results of the experiments showed that the breaking load of the reinforced beams increased by 17-50%, and the impact toughness increased 2.74 times compared to the reference sample. This review shows that, with many experimental studies, the strain compatibilities of reinforcement bars and concrete with basalt fiber remain unexplored. The use of high-strength reinforcement in ordinary concrete is inefficient due to limitations of the compressed concrete deformability. The addition of coarse basalt fiber to the concrete composition increases the ultimate tensile strength of the concrete. Concrete crushing in compression occurs primarily due to the achievement of tensile stresses in the transverse direction of peak values. A significant increase in ultimate tensile strength actually leads to strain hardening of concrete in compression. The collaboration of steel reinforcement and concrete makes it possible to use higher strength reinforcement, capable of increasing the bearing capacity of the column with increased deformability. Thus, the purpose of this article was to study the ultimate compressive strain of short reinforced concrete columns reinforced with basalt fiber, to increase the bearing capacity, reduce the dead weight of the structure, and increase the efficiency of compressed elements, by using basalt fiber, with the possibility of using steel reinforcement of higher strength.