 Micro-Rebar has also been recently tested and approved to replace traditional reinforcement in vertical walls designed in accordance with ACI 318 Chapter 14.An FRC sub-category named High-Performance Fiber Reinforced Concrete (HPFRC) claims 500 times more resistance to cracking and 40 percent lighter than traditional concrete.HPFRC claims it can sustain strain-hardening up to several percent strain, resulting in a material ductility of at least two orders of magnitude higher when compared to normal concrete or standard fiber-reinforced concrete.