Research on Pure Modes I and II and Mixed-Mode (I/II) Fracture Toughness of Geopolymer Fiber-Reinforced Concrete

Figure 18

Fracture of long steel fibrous specimens at different loading angles: (a) 0°, (b) 15°, (c) 28.83°, (d) 45°, (e) 60°, (f) 75°, and (g) 90°.