Performance Analysis of CFRP Composite Strips Confined RC Columns under Axial Compression

Table 1

Experimental result of all specimens.

Designation of columns	Failure load; (kN)	Ultimate axial deformation ()	% of the restraining effect against axial deformation compared to reference column	Displacement ductility,	% of increase in axial load carrying capacity	The maximum stiffness value of all columns (kN/mm)	Theoretical [39]	Percentage of error,; (%)
NC-CC	252.13	2.72	—	1.012	—	81.78	—	—
NC-20-1	338.45	4.95	16.67	0.956	34.12	99.45	309.33	8.48
NC-20-2	400.23	3.94	82.60	1.002	58.73	148.47	366.66	8.33
NC-20-3	502.09	3.52	197.87	1.284	99.20	265.91	424.12	15.54
NC-40-1	261.14	3.48	1.22	0.932	3.57	78.12	296.21	13.64
NC-40-2	310.19	3.73	40.67	0.97	23.02	108.12	341.18	10.06
NC-40-3	339.72	2.81	92.15	1.061	34.74	180.14	385.77	13.80