Properties of Reinforced Concrete Steel Rebars Exposed to High Temperatures
Open Access
- 15 May 2008
- journal article
- research article
- Published by Hindawi Limited in Research Letters in Materials Science
- Vol. 2008, 1-4
- https://doi.org/10.1155/2008/814137
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 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.Keywords
This publication has 6 references indexed in Scilit:
- The effect of cover thickness on rebars exposed to elevated temperaturesConstruction and Building Materials, 2008
- Concrete cover effect on reinforced concrete bars exposed to high temperaturesConstruction and Building Materials, 2007
- Experimental behaviour of a steel structure under natural fireFire Safety Journal, 2006
- Residual strength of hybrid-fiber-reinforced high-strength concrete after exposure to high temperaturesCement and Concrete Research, 2004
- Parametric studies on fire resistance of fire-resistant steel membersJournal of Constructional Steel Research, 2003
- Strength and durability recovery of fire-damaged concrete after post-fire-curingCement and Concrete Research, 2001