Table 4 Test results—specimen details, bar peak load and bond strength.
From: Bond Strength of GFRP Bars Embedded in Engineered Cementitious Composite using RILEM Beam Testing
Spec. ID | Embedded length | LM bar | HM bar | Ratio of bond strength | Peak load as % of ultimate load of GFRP bar | ||||
|---|---|---|---|---|---|---|---|---|---|
Designation | mm | Peak load* (kN) | Bond strength* (MPa) | Peak load* (kN) | Bond strength* (MPa) | τHM/τLM | LM | HM | |
ECC-12.7 | 5D | 60 | 59.5 | 21.9 | 53.9 | 18.4 | 0.84 | 46.9 | 32.4 |
7D | 84 | 73.3 | 19.3 | 60.6 | 14.6 | 0.76 | 57.7 | 36.5 | |
10D | 120 | 94.2 | 17.3 | 68.3 | 11.7 | 0.67 | 74.2 | 41.2 | |
ECC-15.9 | 5D | 80 | 86.5 | 19.9 | 99.9 | 21.1 | 1.06 | 46.3 | 42.5 |
7D | 112 | 106.8 | 17.5 | 119.8 | 18.1 | 1.03 | 57.1 | 51.0 | |
10D | 160 | 138.2 | 15.9 | 143.7 | 15.2 | 0.96 | 73.9 | 61.2 | |
ECC-19.1 | 5D | 95 | 109.9 | 18.0 | 97.8 | 15.1 | 0.84 | 40.8 | 30.9 |
7D | 133 | 136.7 | 16.0 | 126.0 | 13.9 | 0.87 | 50.8 | 39.8 | |
10D | 190 | 168.2 | 13.7 | 160.8 | 12.4 | 0.90 | 62.5 | 50.7 | |
NC-15.9 | 5D | 80 | 80.3 | 18.5 | 70.7 | 15.0 | 0.81 | 42.9 | 30.1 |
7D | 112 | 105.6 | 17.3 | 89.0 | 13.4 | 0.78 | 56.4 | 37.9 | |
10D | 160 | 120.8 | 13.9 | 99.2 | 10.5 | 0.76 | 64.6 | 42.2 | |
NC-19.1 | 5D | 95 | 68.7 | 11.2 | 65.4 | 10.1 | 0.90 | 25.5 | 20.6 |
7D | 133 | 91.8 | 10.7 | 87.0 | 9.6 | 0.90 | 34.1 | 27.4 | |
10D | 190 | 118.7 | 9.7 | 122.3 | 9.4 | 0.97 | 44.1 | 38.6 | |