ANÁLISE DA RESISTÊNCIA DE AMOSTRAS DE VERGALHÕES CA-50 SUBMETIDOS AO TESTE DE TRAÇÃO PARA VERIFICAÇÃO DE SUAS ESPECIFICAÇÕES

Abstract

Since the beginning of its manufacture, steel has become fundamental for the development of civilization. Today, its wide use in civil construction makes its manufacturing process extremely rigorous, in order to obtain the maximum of its properties. With the great growth of the steel industry in Brazil, due to the development of civil construction, the demand and the offer of this product are growing more and more, and that is why a quality product is needed. In this perspective, this work aimed to investigate the physical and mechanical characteristics of CA-50 rebar samples from three different manufacturers, X, Y and Z, with the purpose of verifying what the behavior of these products is through the simple tensile test. For this purpose, rebar 8 mm in diameter (5/16”) was chosen, and with the results obtained during the tests it was possible to elaborate tables and graphs that helped in the comparison of the properties of each brand. With the tests, it was possible to observe that one brand stood out from the others in relation to some extremely important mechanical properties for a rebar, even though all brands have met the minimum requirements set out in the NBR 7480 standard: Steel for the reinforcement of concrete structures - Specification, Brazilian standard that guarantees the quality of steels for civil construction.