Behavior of Small-Scale Concrete Cylinders in Compression Laterally Confined by Basalt Fiber and PEN Fiber Reinforced Polymer Composites

International Journal of Concrete Structures and Materials

Table 6 Summary of FRP confinement test results.

Index	\(f'_{co}\) (MPa)	\(f'_{cc}\) (MPa)	ε_co (m/m)	ε_ccu (m/m)	f_cc _@ ε_co (MPa)	ε_{h @} ε_co (m/m)	ε_h,rup (m/m)	\(f_{l}\) (MPa)	\(f_{l}\) / \(f'_{co}\)	Failure mode
C-C-1	25.0		0.0024
C-C-2	24.6		0.0019
C-C-3	24.8		0.0020
C-B2-1		37.0		0.021	25.6	0.0014	0.019	3.99	0.16	RP
C-B2-2		35.4		0.021	26.3	0.0010	0.021	4.39	0.18	RP
C-B2-3		33.2		0.020	23.2	n/a	0.023	4.79	0.19	RP
C-B4-1		47.9		0.027	25.5	0.0009	0.022	9.16	0.37	RP
C-B4-2		50.2		0.025	29.8	0.0006	0.019	7.64	0.31	RP
C-B4-3		48.9		0.025	29.6	0.0009	0.018	7.40	0.30	RP
C-B6-1		62.0		0.034	26.8	0.0011	0.020	12.59	0.50	RP
C-B6-2		62.7		0.031	28.9	0.0008	0.022	13.80	0.55	RP
C-B6-3		62.9		0.031	28.0	0.0010	0.019	12.04	0.48	RP
C-P1-1		33.9		0.033	20.7	0.0011	0.032	4.51	0.18	DB
C-P1-2		33.9		0.034	22.8	0.0013	0.031	4.41	0.18	DB
C-P1-3		33.9		0.033	23.6	0.0009	0.038	5.09	0.20	DB
C-P2-1		42.0		0.035	26.6	0.0006	0.034	9.32	0.37	DB
C-P2-2		40.7		0.037	24.8	0.0012	0.040	10.62	0.42	D-R
C-P2-3		41.6		0.039	27.7	0.0005	0.046	11.75	0.47	D-R
C-P3-1		62.6		0.061	26.7	0.0008	0.067	23.51	0.94	DB
C-P3-2		62.6		0.052	27.3	0.0009	0.043	16.67	0.67	DB
C-P3-3		62.6		0.054	27.9	0.0008	0.050	18.85	0.75	DB

Specimen index. C—circular cross section; B2, 4, 6—BFRP 2, 4, 6 layers; P1, 2, 3 —PEN FRP 1, 2, 3 layers; 1, 2, 3—replicate no.; RP—FRP rupture; DB—FRP delamination; D-R—delamination followed by FRP rupture.