Properties of reinforced concrete steel rebars exposed to high temperatures

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The deterioration of the mechanical properties of yield strength and modulus of elasticity is considered as the primary element affecting the performance of steel structures under fire. In this study, hot-rolled S220 and S420 reinforcement steel rebars were subjected to high temperatures to investigate the fire performance of these materials. It is aimed to determine the remaining mechanical properties of steel rebars after elevated temperatures. Steels were subjected to 20, 100, 200, 300, 500, 800, and 950°C temperatures for 3 hours and tensile tests were carried out. Effect of temperature on mechanical behavior of S220 and S420 were determined. All mechanical properties were reduced due to the temperature increase of the steel rebars. It is seen that mechanical properties of S420 steel was influenced more than S220 steel at elevated temperatures. Copyright © 2008 Ilker B. Topcu and C. Karakurt.




Topçu, I. B., & Karakurt, C. (2008). Properties of reinforced concrete steel rebars exposed to high temperatures. Advances in Materials Science and Engineering, 2008.

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