Behavior of Concrete-Filled Steel Tube Columns Subjected to Axial Compression

Table 6

Material properties of the concrete core and steel tube.

Steel tube	Concrete	Reinforced bar	Steel tube (mm)
D = 100 mm	M30	D = 6 mm	Ec = 16 MPa
t = 1 mm	—	—	fy = 300 KPa
Es = 200 GPa	C : S : W = 1 : 1.76 : 0.32	—	—