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Reinforced concrete members under the influence of elevated temperatures

Simkova S.

Zeszyty Naukowe Politechniki Rzeszowskiej. Budownictwo i Inżynieria Środowiska

2009

z. 52 [264]

185-192

The paper is focused on performed experiments and created solving model for determination of strain and state of stress of temperature loaded, symmetrically reinforced concrete element. The attention is also paid to comparison of experimental dependence and dependence resulting from the created mathematical model between length strain and tensile stress of reinforced concrete specimens, which were caused by force effects of steel reinforcement under the influence of elevated temperatures up to 100°C. Calculations according to the created model fit well the processes running at the heating up to 60°C without taking into consideration thermal creep. Above the temperature of 60°C, it is necessary to consider the influence of the thermal creep, which, as it is shown, is not negligible above the mentioned temperature also during its short term effect.