In hollow-core slabs,
the presence of void cores affects the thermal inertia of
slabs,
influencing temperature transmission through the
slab thickness. The transmission of heat from the fire
source to the slab is through radiation and convection,
whereas transmission of heat within the slab is through
conduction in solid concrete and convection and radiation
in the hollow cores. Spalling, bond slip, and shear crushing
have been observed in previously reported fire tests of
these slabs. Further, the fire response of hollow-core slabs
is also affected by a number of factors, including the type
of fire exposure, loading, restraint conditions, concrete
cover thickness, and aggregate type. These parameters need
to be properly accounted for accurate evaluation of the fire
resistance of hollow-core slabs.