Mechanical self-healing of conventional and high-performance concrete incorporating SAP, crystalline admixture, and sepiolite
[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 crystall...
| Autores: | , , , |
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| Formato: | artículo |
| Fecha de publicación: | 2025 |
| País: | España |
| Recursos: | Universitat Politècnica de València (UPV) |
| Repositorio: | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia |
| Idioma: | inglés |
| OAI Identifier: | oai:riunet.upv.es:10251/230016 |
| Acesso em linha: | https://riunet.upv.es/handle/10251/230016 |
| Access Level: | acceso abierto |
| Palavra-chave: | Autogenous healing Crystalline admixture Superabsorbent polymers Self-healing concrete Sepiolite |
| Resumo: | [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. |
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