[Retracted] Mechanical Behavior of Silica Fume Concrete Filled with Steel Tubular Composite Column

Table 1

Mix proportions for cube specimens.

Mix	Cement (kg/m^3)	Silica fume (kg/m^3)	Water (kg/m^3)	Coarse aggregate (kg/m^3)	Manufacturing sand (kg/m^3)
1	350	0	140	1140	896
2	365.75	19.25	140	1117.04	877.68
3	346.5	38.5	140	1112.44	874.06
4	327.25	57.75	140	1109	871.64