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Design of the Anchorage Length of FRP Reinforcement with the Influence of Extreme Temperature Loading Due to the Effects of Fire
Vašátko, David ; Zlámal, Martin ; Čairović, Đorđe ; Lagiň, Juraj ; Zlámalová, Pavlína ; Štěpánek, Petr
The extremely high temperatures from fire exposure have a negative impact on the behaviour of reinforced concrete structures regardless of the type of reinforcement used. The reduced mechanical properties of the materials need to be taken into account in the design of the structure, including anchorage length, to ensure that the reinforcement does not detach from the concrete. In the case of Fibre Reinforced Polymers (FRP) reinforcement, there are limited number of codes addressing the design issues in a fire situation. This article, based on experimental findings, proposes a procedure for determining anchorage length of FRP reinforcement under elevated temperatures.
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The Methodology for Testing the Bond Between FRP Reinforcement and Concrete Under the Influence of High Temperatures and Fire
Zlámalová, Pavlína ; Zlámal, Martin ; Čairović, Đorđe ; Lagiň, Juraj ; Vašátko, David ; Štěpánek, Petr
The determination and understanding of the bond strength between FRP reinforcement and concrete, which ensures the mutual interaction of these materials, are indispensable for the proper, safe, and reliable design of concrete structures with internal reinforcement. This characteristic also serves as a fundamental parameter for designing the anchorage length of the reinforcement.
While it is one of the fundamental characteristics, there is no domestic or international standards defining the procedure for testing and determining the influence of high temperatures and fire on the bond strength between FRP reinforcement and concrete.
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