Stiffness Analysis of Recycled Self-Compacting Concrete-Filled Circular Steel Tubular Columns under Eccentric Compression

Table 5

Combinations of , , , , and strength grade of concrete.

Parameter	Fixed values												Strength grade of concrete
Yield strength of the steel (MPa)	235	345	390	420	235	235	235	235	235	235	235	235	235	235
Steel ratio	0.10	0.10	0.10	0.10	0.05	0.15	0.20	0.10	0.10	0.10	0.10	0.10	0.10	0.10
Diameter-thickness ratio	38.6	38.6	38.6	38.6	38.6	38.6	38.6	30	50	70	38.6	38.6	38.6	38.6
Replacement ratio of RCA (%)	50	50	50	50	50	50	50	50	50	50	0	100	50	50
Strength grade of concrete	C50	C50	C50	C50	C50	C50	C50	C50	C50	C50	C50	C50	C30	C60