Compared to the marked steel fiber with lower strength, the hooked steel fiber with higher strength has better effects on the flexural toughness and fracture energy of HPC.

• 与低强凸痕型钢纤维相比，端部带弯钩的高强钢纤维对高性能混凝土弯曲韧性和断裂能的提高效果更为显著。