Akademik Veri Yönetim Sistemi
4th International Conference on Engineering Optimization, ENGOPT 2014, Lisbon, Portekiz, 8 - 11 Eylül 2014, ss.809-814
© 2015 Taylor & Francis Group, London.Reinforcement corrosion is widely accepted to be the most frequent mechanism decrease of the constitutive materials durability and service life of reinforced concrete structures. In this study, the results of corrosion investigation of 50-year-old steel reinforcing bars embedded in concrete are presented. Steel plain bars with the diameters 6, 8, 10 and 12mm were cut from the collapsed structural members (column, beam etc.) in building debris. Several experimental techniques were used to characterize steel rebar embedded in concrete. As a result of tension tests performed on these samples; yield strength, ultimate strength, fracture strength capacity, modulus of elasticity and reduction in areas were calculated. According to the test results, 36% of all the samples were not satisfying 220MPa limit yield strength while 100% of all the samples were not satisfing 18% maximum strain capacity. Stress-strain curves for steel rebar were obtained by performing uniaxial tests.