Table 7.
Strains of the tested beam specimens.
| Beam no. | Concrete strain | GFRP strain | ||
|---|---|---|---|---|
| εcu (µε) | εc−90% (µε) | εfu (µε) | εf−90% (µε) | |
| 2G10-2S10-C | − 6475 | − 4942 | 19,687 | 16,250 |
| 2G10-2S10-E50 | –* | − 4430 | –* | 17,607 |
| 2G10-2S10-E100 | − 3929 | − 3765 | 20,510 | 19,803 |
| 2G10-2S10-E150 | –* | − 4810 | –* | 19,693 |
| 4G10-E100 | − 5242 | − 4780 | 18,788 | 16,485 |
| 4G10-EU50 | − 4294 | − 3898 | 20,513 | 18,438 |
| 2G10-2S10-EU50 | –* | –* | 22,075 | 19,140 |
εcu is the ultimate concrete strain; εc-90% is the ultimate concrete strain corresponding to 90% of the beam’s maximum capacity; εfu is the ultimate GFRP rebar strain; and εf-90% is the ultimate GFRP rebar strain corresponding to 90% of the beam’s maximum capacity.
*Strain gauges failed during loading.