Formagini, SidicleiDoostkami, HesamSerna Merino, Pedro ManuelRoig-Flores, Marta2025-11-092025-11-092025-11-01https://riunet.upv.es/handle/10251/230016[EN] This study evaluates the efficiency of autogenous healing and self-healing agents in restoring mechanical properties through three-point bending tests. The healing agents investigated include a crystalline admixture, superabsorbent polymer, and sepiolite in ordinary concrete (OC) and a crystalline admixture in high-performance concrete (HPC). Various healing conditions were compared, including: water immersion (28 and 56 days), humidity chamber storage, and presaturation combined with humidity chamber. Mechanical recovery was analyzed using flexural strength tests loading-reloading curves. A reference series (CTL) was introduced to differentiate healing effects from natural maturation. Strength and stiffness recovery parameters confirmed distinct self-healing effects. The results show that crystalline admixtures provided limited additional benefits beyond natural autogenous healing and that superabsorbent polymers and sepiolite improved self-healing in high humidity conditions. The introduced stiffness recovery parameters could detect healing effects, setting a methodological advancement over conventional indices.Reconocimiento - No comercial - Sin obra derivada (by-nc-nd)Autogenous healingCrystalline admixtureSuperabsorbent polymersSelf-healing concreteSepioliteMechanical self-healing of conventional and high-performance concrete incorporating SAP, crystalline admixture, and sepioliteArtÃculo10.1016/j.jobe.2025.114031Abierto2352-7102