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Comparison of fire resistance and burnout resistance of simply supported reinforced concrete slabs exposed to parametric fires

Thomas Thienpont (UGent) , Ruben Van Coile (UGent) , Robby Caspeele (UGent) and Wouter De Corte (UGent)
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Abstract
Traditionally the fire resistance of concrete elements is determined through prescriptive methods, often with the use of tabulated data. Herein, the structural behaviour during or after the cooling phase of the fire is not considered. This is a major shortcoming considering the potential of delayed collapse during the cooling phase exists. To take into account the structural behavior after the heating phase, the concept of burnout resistance was introduced in recent literature, which indicates the performance of concrete elements or structures until complete burnout. In this paper the bending moment resistance until burnout is determined for simply supported reinforced concrete slabs exposed to the Eurocode parametric fire curve, for a wide range of parameters. The fire resistance and burnout resistance are compared and an equation for describing the relationship between both is presented. A calculation method is provided which allows to apply these results to a parametric fire in any given compartment, through the use of a reference compartment and equivalence equations. Through the use of this simple method, the maximal allowable fire load density for which the concrete slab maintains stability during the entire fire exposure, including the cooling phase, can directly be obtained for any given rectangular compartment.
Keywords
Fire Resistance, Resistance until burnout, parametric fire, reinforced concrete

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MLA
Thienpont, Thomas, et al. “Comparison of Fire Resistance and Burnout Resistance of Simply Supported Reinforced Concrete Slabs Exposed to Parametric Fires.” CONFAB 2019, 3rd International Conference on Structural Safety under Fire and Blast Loading, Proceedings, 2019.
APA
Thienpont, T., Van Coile, R., Caspeele, R., & De Corte, W. (2019). Comparison of fire resistance and burnout resistance of simply supported reinforced concrete slabs exposed to parametric fires. In CONFAB 2019, 3rd International Conference on Structural Safety under Fire and Blast Loading, Proceedings. London.
Chicago author-date
Thienpont, Thomas, Ruben Van Coile, Robby Caspeele, and Wouter De Corte. 2019. “Comparison of Fire Resistance and Burnout Resistance of Simply Supported Reinforced Concrete Slabs Exposed to Parametric Fires.” In CONFAB 2019, 3rd International Conference on Structural Safety under Fire and Blast Loading, Proceedings.
Chicago author-date (all authors)
Thienpont, Thomas, Ruben Van Coile, Robby Caspeele, and Wouter De Corte. 2019. “Comparison of Fire Resistance and Burnout Resistance of Simply Supported Reinforced Concrete Slabs Exposed to Parametric Fires.” In CONFAB 2019, 3rd International Conference on Structural Safety under Fire and Blast Loading, Proceedings.
Vancouver
1.
Thienpont T, Van Coile R, Caspeele R, De Corte W. Comparison of fire resistance and burnout resistance of simply supported reinforced concrete slabs exposed to parametric fires. In: CONFAB 2019, 3rd International Conference on Structural Safety under Fire and Blast Loading, Proceedings. 2019.
IEEE
[1]
T. Thienpont, R. Van Coile, R. Caspeele, and W. De Corte, “Comparison of fire resistance and burnout resistance of simply supported reinforced concrete slabs exposed to parametric fires,” in CONFAB 2019, 3rd International Conference on Structural Safety under Fire and Blast Loading, Proceedings, London, 2019.
@inproceedings{8630573,
  abstract     = {Traditionally the fire resistance of concrete elements is determined through prescriptive methods, often with the use of tabulated data. Herein, the structural behaviour during or after the cooling phase of the fire is not considered. This is a major shortcoming considering the potential of delayed collapse during the cooling phase exists. To take into account the structural behavior after the heating phase, the concept of burnout resistance was introduced in recent literature, which indicates the performance of concrete elements or structures until complete burnout. In this paper the bending moment resistance until burnout is determined for simply supported reinforced concrete slabs exposed to the Eurocode parametric fire curve, for a wide range of parameters. The fire resistance and burnout resistance are compared and an equation for describing the relationship between both is presented. A calculation method is provided which allows to apply these results to a parametric fire in any given compartment, through the use of a reference compartment and equivalence equations. Through the use of this simple method, the maximal allowable fire load density for which the concrete slab maintains stability during the entire fire exposure, including the cooling phase, can directly be obtained for any given rectangular compartment.},
  author       = {Thienpont, Thomas and Van Coile, Ruben and Caspeele, Robby and De Corte, Wouter},
  booktitle    = {CONFAB 2019, 3rd International Conference on Structural Safety under Fire and Blast Loading, Proceedings},
  keywords     = {Fire Resistance,Resistance until burnout,parametric fire,reinforced concrete},
  language     = {eng},
  location     = {London},
  pages        = {7},
  title        = {Comparison of fire resistance and burnout resistance of simply supported reinforced concrete slabs exposed to parametric fires},
  year         = {2019},
}