Bearing Capacity of Recycled Self-Compacting Concrete-Filled Circular Steel Tubular Long Columns Subjected to Axial Load

Table 2

Proportioning of RSCC.

Strength grade	Water-to-binder ratio	Water (L/m^3)	Sand (kg/m^3)	Cement (kg/m^3)	Fly-ash (kg/m^3)	Water reducer (kg/m^3)	RA (kg/m^3)
C30	0.46	210	736	305	144	3.143	798
C50	0.32	176	798	449	106	3.885	798
C60	0.28	164	736	477	113	1.770	798