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A Study About the Effect of Bond between Steel Reinforcement and Concrete Under Fire Conditions

This paper gives a parametric study on the bond behaviour of reinforced concrete beams under fire conditions. The study identified some most important factors, which can affect the bond behaviour between concrete and reinforcement for reinforced concrete beam at elevated temperatures. These factors such as: steel bar yielding, concrete cover, concrete compressive strength and concrete spalling. The results indicated that concrete cover has a great influence on the bond strength by providing the confinement to the reinforcement. Also, the impact of concrete spalling on the beam is significant for both full bond and partial bond cases. In this study, finite element software VULCAN is used to analyse the beam under fire condition.