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- W3207619982 abstract "• Water penetration in concrete with different cracks is evaluated by chloride penetration. • The evaluation of self-healing through chloride penetration presents reliable results. • UHPFRC shows better self-healing than conventional and high-performance concretes. This study presents a novel methodology to evaluate the self-healing capability of Ultra High-Performance Fiber-Reinforced Concrete (UHPFRC) designed to compare conventional concrete types. The procedure used combines loading reinforced concrete elements until a fixed strain level to have a comparable total crack opening. Afterwards, water penetration to chlorides is used as an indicator of permeability. This work compares autogenous healing efficiency of a conventional concrete, a high-performance concrete, and two types of UHPFRCs with and without 0.8% of a crystalline admixture (CA) by the binder weight. The results show that all UHPFRC specimens exhibited excellent autogenous healing, higher than conventional concretes for an equivalent total crack. The self-healing results depended greatly on the crack size and the fiber content. Additionally, UHPFRCs with CA obtained the lowest water permeability after promoting self-healing for one month in water immersion and presented almost complete healing against chloride penetration." @default.
- W3207619982 created "2021-10-25" @default.
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- W3207619982 date "2021-12-01" @default.
- W3207619982 modified "2023-10-18" @default.
- W3207619982 title "Self-healing efficiency of Ultra High-Performance Fiber-Reinforced Concrete through permeability to chlorides" @default.
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- W3207619982 doi "https://doi.org/10.1016/j.conbuildmat.2021.125168" @default.
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