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The diffusion coefficient and saturation water absorption of the FRP bars fitted by the Equation (2).
| Temperature (°C) | GFRP Bars | HFRP Bars | ||
|---|---|---|---|---|
| Dr (×10–13 m2/s) | M∞ (%) | Dr (×10–13 m2/s) | M∞ (%) | |
| 21 | 1.19 | 0.29 | 4.30 | 0.33 |
| 40 | 1.61 | 0.29 | 7.20 | 0.33 |
| 60 | 7.17 | 0.29 | 7.98 | 0.33 |
