Matches in UGent Biblio for { ?s ?p In this study, cracking formation and repair due to autonomous healing of concrete beams, tested in two stages of bending (loading-reloading) are reviewed. Encapsulated PU-based healing agent is embedded into concrete beams and is released when crack formation triggers and actuates the chemical repair process. The released agent fills the open crack and seals the fractured area. The potential mechanical recovery of the damage is investigated. Advanced optical and acoustic experimental methods evaluate the mechanical response of the composite material. Acoustic Emission monitors breakage of the capsules embedded into the specimens and locates and quantifies the damage occurred. In parallel, Digital Image Correlation of the experimental controlle crack opening/closure and reopening due to bending. Correlation of the experimental results obtained by both techniques gives a full view of the healing efficiency of the proposed system. Monitoring by potential differentiations at the formation of the fracture process due to capsule breakage phenomena is the main aim of this research.. }
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- aggregation abstract "In this study, cracking formation and repair due to autonomous healing of concrete beams, tested in two stages of bending (loading-reloading) are reviewed. Encapsulated PU-based healing agent is embedded into concrete beams and is released when crack formation triggers and actuates the chemical repair process. The released agent fills the open crack and seals the fractured area. The potential mechanical recovery of the damage is investigated. Advanced optical and acoustic experimental methods evaluate the mechanical response of the composite material. Acoustic Emission monitors breakage of the capsules embedded into the specimens and locates and quantifies the damage occurred. In parallel, Digital Image Correlation of the experimental controlle crack opening/closure and reopening due to bending. Correlation of the experimental results obtained by both techniques gives a full view of the healing efficiency of the proposed system. Monitoring by potential differentiations at the formation of the fracture process due to capsule breakage phenomena is the main aim of this research.".