Research Article
Revised Rebound Hammer and Pull-Out Test Strength Curves for Fiber-Reinforced Concrete
Table 1
Properties of fiber materials used in the concrete specimens.
| Fiber property | Polypropylene fiber | Carbon fiber |
| Length (mm) | 9 | 10 | Diameter (mm) | 0.031 | 0.008 | Tensile strength (MPa) | 300 | 3500 | Modulus of elasticity (GPa) | 4 | 240 |
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