Influence of Basalt Fiber Dispersed Reinforcement on the Work of Concrete Beams with Non-metallic Composite Reinforcement

Abstract

Recently, non-metallic composite reinforcement has been used more frequently to reinforce concrete beam structures. It has a number of advantages in comparison with steel: much greater tensile strength, high corrosion resistance, low weight, dielectric constant. However, non-metallic composite reinforcement has a lower elasticity compared to steel, and beams reinforced with non-metallic composite reinforcement have worse characteristics of deformability and crack resistance. To improve these characteristics, dispersed basalt fiber reinforcement of concrete beams with non-metallic composite reinforcement has been proposed, the effectiveness of which has been proven experimentally. The test specimens were beams with a cross section of 100 × 200 mm and a length of 2100 mm, which were made of laboratory-made concrete. The basic reinforcement of each of the beams was one rod of working basalt-plastic reinforcement type ANPB with length of 2080 mm (diameter varied in series: 4, 6, 8, 10, 12 or 13 mm). The beams were tested on a power bench according to the scheme of pure bending – two concentrated forces located in the thirds of the run, transmitting the load from the hydraulic jack.