Table 9.
Increases in strength and deformation characteristics of fiber-reinforced concrete specimens depending on the type of dispersed reinforcement.
| Concrete Characteristics | Δ, % in Relation to Heavy Concrete (Monodispersion-Fiber-Reinforced Concrete) | ||
|---|---|---|---|
| Monodispersion-FRC (d = 9 μm, l = 6 mm) |
Monodispersion-FRC (d = 13 μm, l = 12 mm) |
Polydispersion-FRC | |
| Rb,cub, MPa | +3.3 | +4.8 | +9.5 (+4.5) |
| Rb, MPa | +3.2 | +5.1 | +11 (+5.9) |
| Rbtb, MPa | +71 | +93 | +126 (+17) |
| Rbt, MPa | +24 | +36 | +45 (+7.0) |
| εbR, mm/m × 10−3 | +28 | +32 | +37 (+4.0) |
| εbtR, mm/m × 10−4 | +153 | +269 | +296 (+7.3) |
| E, GPa | +3.3 | +6.4 | +12 (+5.1) |