Table 2. Summary of Experimental Test Results.
| Beam designation | Pcra (kN) | Pwa (kN) | Pua (kN) | Δua (mm) | CFRPb strengthening effectiveness ratio (%) | Failure Modec |
|---|---|---|---|---|---|---|
| CB-1 | 56 | 105.33 | 158 | 6.631 | CC + SY | |
| CB-2 | 52 | 104 | 156 | 5.454 | CC + SY | |
| EBR-B-1 | 70 | 120 | 180 | 8.063 | ECS + EID | |
| EBR-B-2 | 76 | 126.67 | 190 | 10.310 | 17.83 | ECS + EID |
| NSM-B-1 | 54 | 126.67 | 190 | 13.017 | EID | |
| NSM-B-2 | 60 | 138.67 | 208 | 14.933 | 26.75 | EID + ECS |
a
Pcr = cracking load, Pw = working load, Pu = ultimate load, Δu = ultimate deflection.
b
Strengthening effectiveness ratio = (failure load of beam – failure load of CB)/failure load of CB.
c
CC = concrete crushing, SY = steel yielding, ECS = end cover separation, EID = end interfacial debonding.