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Behavior of Reinforced Concrete Members Exposed to High Temperatures
The changes in the thermal and mechanical properties of the construction materials, sectional responses of reinforced concrete (RC) members were presented for different temperature levels. A parametric study was carried out to determine the effects of high temperatures on the behavior of RC elements by comparing with the results those of the reference element which does not expose to high temperature. Aiming at this goal, a series of RC members were modeled and analyzed by using finite elements in ANSYS program. The models were also verified by comparing the results published in the literature. The RC members were assumed as exposed to standard fire curve (ISO 834) for 1 to 3-hour time periods. At the end of the analyses, temperature variations in cross-sections of the RC elements were obtained. The thermal, mechanical properties of the materials, and sectional responses of the RC elements were determined by using obtained temperature variations. It was concluded that as the temperature getting increase, the strength, modulus of elasticity, thermal conductivity, and density decrease for both concrete and reinforcement bars. On contrary, an increase in the strain capacities, thermal expansion, and specific heat was obtained by increasing in temperature level. Key words: RC elements, high temperatures, thermal properties, mechanical properties, sectional response, finite elements.
Behavior of Reinforced Concrete Members Exposed to High Temperatures
The changes in the thermal and mechanical properties of the construction materials, sectional responses of reinforced concrete (RC) members were presented for different temperature levels. A parametric study was carried out to determine the effects of high temperatures on the behavior of RC elements by comparing with the results those of the reference element which does not expose to high temperature. Aiming at this goal, a series of RC members were modeled and analyzed by using finite elements in ANSYS program. The models were also verified by comparing the results published in the literature. The RC members were assumed as exposed to standard fire curve (ISO 834) for 1 to 3-hour time periods. At the end of the analyses, temperature variations in cross-sections of the RC elements were obtained. The thermal, mechanical properties of the materials, and sectional responses of the RC elements were determined by using obtained temperature variations. It was concluded that as the temperature getting increase, the strength, modulus of elasticity, thermal conductivity, and density decrease for both concrete and reinforcement bars. On contrary, an increase in the strain capacities, thermal expansion, and specific heat was obtained by increasing in temperature level. Key words: RC elements, high temperatures, thermal properties, mechanical properties, sectional response, finite elements.
Behavior of Reinforced Concrete Members Exposed to High Temperatures
Küçük, Elif Nazlı (author) / Düzgün, Oğuz Akın (author)
2023-01-01
Conference paper
Electronic Resource
English