Experimental Study on Eccentric Compressive Performance of Concrete Column Strengthened with CFRP Grid Reinforced ECC Matrix

Table 3

Summary of tested specimens.

Influencing factors	Specimen ID	Number of grid layers	Eccentricity (mm)	Overlap length (mm)
Control group (unstrengthened)	P-L0-e1	——	90	——
	P-L0-e2	——	140	——
	P-L0-e3	——	220	——
Strengthened group (number of grid layers)	S-L1-e2	1	140	240
	S-L2-e2	2	140	240
	S-L3-e2	3	140	240
Strengthened group (eccentricity)	S-L2-e1	2	90	240
	S-L2-e3	2	220	240
Strengthened group (overlap length)	S-L2-e2-S	2	140	120
	S-L2-e2-M	2	140	480

Note. P, S, and L represent the unstrengthened group, strengthened group, and number of grid layers, respectively. e1, e2, and e3 are increasing eccentricities. M and S in the row of overlap length denote overlap lengths of 480 mm and 120 mm, respectively; the overlap lengths in the rest of the columns are 240 mm.