It is used in concrete structures. The tests were carried out using an Instron 3382 testing machine. As a result of the tests, force-elongation graphs and all mechanical characteristics were obtained.The measurement results were analyzed and discussed. The mechanical characteristics of steel are determined by subjecting samples made directly from steel bars to axial tension. Based on the obtained force-elongation (or stress-strain) relationships, an appropriate steel grade can be selected, taking into account the role the steel plays in a specific structure. In concrete structures, steel in the form of bars, wires, or meshes carries tensile stresses and reinforces the concrete; it is also used as assembly steel. In this paper, based on controlled tensile tests performed in a testing machine, the load-bearing and deformability parameters of selected reinforcing steel grades as well as the energy at bar rupture were determined. (…)
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Source: Logistyka Magazine
Axial tensile testing of bars made of selected reinforcing steel grades – PDF file for download