Experimental Study on Reinforced Concrete Column Incased in Prefabricated Permanent Thin-Walled Steel Form

Table 1

Summary of test specimens.

Number	Specimen	Compressive strength of concrete (MPa)	Steel form	Yield strength of reinforcing bars (MPa)	Gap
1	R21-S600	21	X	600	X
2	P21-S600	21	O	600	X
3	P21-S400	21	O	400	X
4	P21-S600G	21	O	600	O
5	R30-S600	30	X	600	X
6	P30-S600	30	O	600	X
7	P30-S400	30	O	400	X
8	P30-S600G	30	O	600	O
9	CFT	21	X	—	X