Experimental Study on Fatigue Behaviour of BFRP-Concrete Bond Interfaces under Bending Load
Table 2
Test parameters and main results.
Specimen
Load
Upper limit load (kN)
Lower limit load (kN)
Max BFRP (MPa)
Stress ratio
Fatigue life
Average fatigue life
Static capacity (kN)
Failure mode
S-1
Static
1141
25.4
CD
S-2
Static
1019
22.7
CD
S-3
Static
1028
22.6
CD
F-65-1
Fatigue
15.4
3.08
691
0.2
236449
413037
FR
F-65-2
Fatigue
15.4
3.08
691
287985
FR
F-65-3
Fatigue
15.4
3.08
691
714678
AD
F-60-1
Fatigue
14.2
2.84
638
308044
944548
AD
F-60-2
Fatigue
14.2
2.84
638
843351
FR
F-60-3
Fatigue
14.2
2.84
638
1682250
AD
F-55-
Fatigue
13
2.6
584
2352361
F-55-2
Fatigue
13
2.6
584
1682374
1682374
FR
F-55-1
Postfatigue static
1181
Residual static 26.3
FR
Notes. CD = debonding in concrete, AD = debonding at BFRP/adhesive interface, and FR = BFRP rupture. F-55-1 was tested to failure under static loading after 2352361 cycles. axial tensile stress at midspan: under peak load for static tests and upper limit load for fatigue tests.
