Compression Behavior of Confined Columns with High-Volume Fly Ash Concrete

Table 3

Testing matrix.

ID	Longitudinal steel ratio (%)	Tied steel ratio (%)	Tied steel spacing (mm)	(MPa)	Fly ash (%)
N-100	2.25	0.475	100	30.6	0
N-150		0.317	150
N-250		0.190	250
F-100		0.475	100	30	55
F-150		0.317	150
F-250		0.190	250