New Anchorage Technique for GFRP Flexural Strengthening of Concrete Beams Using Bolts-End Anchoring System

International Journal of Concrete Structures and Materials

Table 4 Results of ultimate load, elastic stiffness and energy absorption of beams strengthened with bolt-glass fiber polymer composites (BGFPC)

Specimen	P_u (kN)	KE (kN/mm)	Pre-cracking EA (kN.mm)	Post-cracking EA (kN.mm)	Total EA (kN.mm)
B0-1C	22.59	26.27	11.04	7.52	18.56
B2-C1-D10	42.05	24.74	61.33	103.37	164.7
B4-H-C1-D10	50.78	23.29	74.16	157.07	231.23
B4-H-C1-D6	34.03	24.73	29.11	531.73	560.84
B4-V-C1-D10	46.02	25.57	69.07	190.52	259.59
B6-V-C1-D10	53.8	23.57	67.16	467.64	534.8
B8-H-C1-D10	72.32	24.19	145.47	148.53	294
B8-H-C1-D6	49.05	34.53	23.15	442.95	466.1
B2-C2-D10	45.31	35.12	47.92	492.42	540.34
B4-H-C2-D10	61.57	34.21	95.55	167.59	263.14
B4-H-C2-D6	36.77	21.24	42.44	143.07	185.51
B4-V-C2-D10	56.4	31.20	51.12	120.83	171.95
B6-V-C2-D10	93.54	28.21	73.56	376.24	449.8
B8-C2-D10	78.86	31.17	79.50	73.76	153.26
B8-H-C2-D6	57.35	40.40	28.32	447.79	476.11
B2-C3-D10	50.8	30.60	64.20	558.33	622.53
B4-H-C3-D10	77.47	33.25	135.74	12.59	148.33
B4-H-C3-D6	44.45	27.27	54.56	317.7	372.26
B4-V-C3-D10	64.17	32.41	84.83	137.3	222.13
B6-V-C3-D10	77	33.33	118.78	54.1	172.88
B8-H-C3-D10	89 0.7	33.22	161.59	21.13	182.72
B8-H-C3-D6	71.97	39.03	92.33	316.02	408.35