Mechanical Properties of Full-Scale Prestressed Concrete Beams with Thin Slab after Exposure to Actual Fire

Table 4

The failure mode of test beams.

Beam no.	Failure form
2#	The cracks in the tensioned main steel bars near the middle of the span first exceed the width of 1 mm
3#	The cracks in the tensioned main steel bars near the middle of the span first exceed the width of 1 mm
4#	The width of the crack at the tensioned main steel bar at the diagonal crack near 6.5 m from the middle span exceeds 1 mm
5#	The width of the crack at the tensioned main steel bar at the diagonal crack near 5.5 m from the middle span exceeds 1 mm