文档介绍：外文原文:
Research Letters in Materials Science
Volume 2008 (2008), Article ID 814137, 4 pages
doi:
Research Letter
Properties of Reinforced Concrete Steel Rebars Exposed to High Temperatures
İlker Bekir Topçu and Cenk Karakurt
Department of Civil Engineering, Eskişehir Osmangazi University, 26480 Eskişehir, Turkey
Received 12 February 2008; Accepted 31 March 2008
Academic Editor: Rajiv S. Mishra
Copyright © 2008 İlker Bekir Topçu and Cenk Karakurt. This is an open access article distributed under the mons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
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 9 5 0 ∘ 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