Impact of external biaxial compressive loading on the fire spalling behavior of normal-strength concrete

Md Jihad Miah (1, 2, 3) , Francesco Lo Monte (4) , Roberto Felicetti (4) , Pierre Pimienta (1) , Hélène Carré (2) , Christian La Borderie (2)

1 CSTB - Centre Scientifique et Technique du Bâtiment
2 SIAME - Laboratoire des Sciences de l'Ingénieur Appliquées à la Mécanique et au génie Electrique
3 Incheon National University
4 POLIMI - Politecnico di Milano [Milan]

Explosive spalling of concrete exposed to fire consists in the expulsion of shards from the heated face during rapid heating. The phenomenon can seriously jeopardize the integrity of reinforced concrete structures due to the reduction of the cross-sectional area of the structural elements and even leading to the direct exposure of reinforcing bars to flames. In the literature, it is shown that various parameters influence the occurrence of fire spalling, such as heating rate, specimens geometry and boundary conditions, concrete grade, and external loads.

Keywords: Concrete Biaxial compression Standard fire curve High temperature Pore pressure Thermal stress Fire spalling; Concrete; Biaxial compression; Standard fire curve; High temperature; Pore pressure; Thermal stress; Fire spalling

Domains: Engineering Sciences [physics]; Civil Engineering

Md Jihad Miah, Francesco Lo Monte, Roberto Felicetti, Pierre Pimienta, Hélène Carré, et al.. Impact of external biaxial compressive loading on the fire spalling behavior of normal-strength concrete. Construction and Building Materials, 2023, 366, pp.130264. ⟨10.1016/j.conbuildmat.2022.130264⟩. ⟨hal-04007428⟩