Influence of elevated temperature on load bearing capacity of reinforced fine-grained concrete

Abstract

The paper presents an analysis of elevated temperature influence on the load bearing capacity of rectangular doubly-reinforced concrete cross-sections. The numerical analysis was carried out basing on authors’ experiments on fine-grained concrete subjected to elevated temperature in the range from +20 oC to +600 oC and using the Eurocode 2 relation between the plastic limit of steel and temperature. The load bearing capacity of cross-sections with various amount of reinforcement – symmetric and non-symmetric, was investigated using limit state interaction diagrams.