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This paper considers the reinforcement elongation of RC elements subjected to fire in conformity with Eurocode (EN 1992-1-2). The stress-strain relationships for bars tensioned in elevated temperatures given in Eurocode, refer to 100°C temperature intervals. These dependencies pertain to only a part of total reinforcement elongation – the part that occurs due to load action. The free steel thermal...
The paper discusses key processes and phenomena occurring in concrete subjected to elevated temperatures. It refers to main pre-requisites of the Eurocode model (EN 1992-1-2) discussing mechanical properties of heated concrete and it discusses the behaviour of concrete in reinforced concrete structures exposed to fire, which does not necessarily have to be fully compliant with expectations based on...
The paper presents steps necessary to perform a calculation of the fire resistance of a RC structure. A simple tool for evaluating this parameter are tabulated data which provide minimum requirements in terms of cross-section dimensions and distance of the reinforcement to the surface of the cross-section exposed to fire, depending on the type of the element and required fire resistance. More precise...
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