Analysis of Bond Behavior of FRP-Confined Concrete Piles Based on Push-Out Test

Table 7

Test results of specimens of Groups B-1 and B-2.

Group	Code	Bond type	Geometry size (D × L × t (mm))	Radius- thickness ratio (D/t)	τu (kPa)	Su (mm)	τr (kPa)
B1	7-2	Internal threads	200 × 200 × 15	13.3	636.62	3.33	295.84
	2-2	Internal threads	200 × 200 × 11	18.2	491.80	4.04	324.12
B2	8-2	Internal threads	400 × 400 × 17	23.5	197.40	5.26	97.62
	4-2	Internal threads	400 × 400 × 13	30.8	144.89	4.80	63.83