Stimulated autogenous-healing capacity of fiber-reinforced mortar incorporating healing agents for recovery against fracture and mechanical properties

Abstract This study aimed to investigate the effect of autogenous healing capacity with addition expansive and crystalline agents on mechanical fracture behaviors fiber-reinforced (FR) mortar specimens crack mouth opening displacement (CMOD) controlled test set-up. The experimental results a self-healing approach FR were analyzed in terms first cracking peak load (FCPL) increase, index toughness recovery (IFTR), energy (IFER). Initially, pre-cracked at different widths ranging from 30 μm 200 after 28-days curing. After pre-cracking, kept water for 56- 120-day healing. A three-point bending (PBT) was applied prism specimen having central notch 40 mm depth pre-cracking as well post-conditioning stage determining FCPL. However, surfaces monitored by high-range digital microscope scanning electron (SEM) examine nature healed products near damaged area. Test revealed that significant small cracks (≤50 μm) could be achieved using (HA), while large (≥100 partial period.