However, there is limited data and understanding in the literature on the effect of fire-induced biaxial bending on the response of RC. The model generates critical response parameters such as cross-sectional temperatures, axial and lateral deformations, failure time and failure modes, extent of fire-induced spalling, and strains across the cross-section, which can be used for evaluating failure of an RC column based on different limit states. Structures in Fire SiF08, Singapore, May 28-30 (2008) 440-450. M. The comparison shows that the proposed approach gives good estimates of fire resistance and also these fire resistance predictions are better than those obtained from current code provisions. Beaucour, A.

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Civ. The fire resistance under standard fire is evaluated through an equation that accounts for critical factors, such as fire scenario, spalling, load ratio, load eccentricity (uniaxial and biaxial), different face exposure (1-, 2-, 3-, or 4-side), concrete strength, and slenderness ratio. edu no longer supports Internet Explorer. The test variables include concrete strength (permeability), fire scenario, load ratio and the presence of polypropylene fibers in concrete mix. thesis), University of Liege, (2012). Results from the tests show that HSC columns exhibit lower fire resistance due to occurrence of spalling and faster degradation of strength.

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Results from the parametric studies are utilized to develop a rational design approach for evaluating fire resistance of RC columns. Gernay, J. Academia. 2011Concrete–TestingConcrete–Fire testingConcrete–EvaluationColumns, ConcreteFire testingReinforced concreteCivil EngineeringDoctoralEnglishxv, 311 pages9781124858999
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The behavior of RC columns, especially those fabricated from click resources concrete (HSC), under design fire exposure is not well quantified. The columns comprised of one NSC, three HSC and two HSC columns with polypropylene fiber, and were tested under a standard and two design fires. Net is a registered brand of Trans Tech Publications Ltd 2022 by Trans Tech Publications Ltd. High strength concrete (HSC) columns are especially prone to such biaxial bending due to fire induced spalling. 25335/M5N97Q. Data from these fire tests, as well as that reported in literature, was utilized to validate the above numerical model by comparing concrete and rebar temperatures, extent of spalling, axial and lateral deformations, and failure times.

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