Axial Behaviour of Slender RC Circular Columns Strengthened with Circular CFST Jackets

Table 2

Mixes and properties of concrete.

Concrete	Cement	Sand	Gravel	Water	Water reducer	Expansive agent	Fly ash	Cubic strength (MPa)	Slump (mm)
RC C25	1.000	2.103	4.082	0.635	0.000	0.000	0.000	32.83	N/A
SCC C40	1.000	2.239	3.075	0.522	0.014	0.143	0.284	43.01	670
SCC C50	1.000	1.892	2.838	0.459	0.017	0.143	0.286	52.58	675
SCC C60	1.000	1.667	3.000	0.423	0.022	0.146	0.282	57.29	672