Tensile strength of reinforcing bars after bending-unbending

The article studies the influence of bending and unbending of reinforcing bars on the mechanical properties of steel bars. This problem is relevant in the practice of constructing monolithic reinforced concrete structures, since reinforcing bars are often subjected to initial bending. The question arises about their further use. Based on the results obtained, a comparative analysis of the mechanical properties is presented for reinforcing bars after tensile strength testing with varying the initial bend diameter. According to this testing, it is possible to further use these reinforcing bars after single and reverse bending without reducing the strength properties of the steel.