Cyclical Behavior of Concrete-Encased Composite Frame Joints with High Strength Concrete

Table 2

Concrete mix properties and strength.

Design strength grade	C60	C80	C100
Water cementitious ratio	0.30	0.26	0.24
Cement (kg/m^3)	350	450	450
Coarse aggregate (kg/m^3)	700	544	510
Fine aggregate (kg/m^3)	1150	1156	1190
Water (kg/m^3)	150	156	144
Superplasticizer (kg/m^3)	8	12	12
Silica fume (kg/m^3)	0	30	60
Fly ash (kg/m^3)	150	120	90
Cube compressive strength (MPa)	79.82	87.89	109.54
Axial compressive strength (MPa)	68.25	78.49	95.07
Modulus of elasticity (MPa)	41675	42042	42885