In recent years, fiber-reinforced composite technology has spread to the field of structural engineering to rehabilitate existing works. These systems make it possible to increase the load capacity of the structural work and improve its behavior in the event of an earthquake, avoiding its demolition. The following work reports a theoretical framework and discusses the results obtained from an experimental investigation on the behavior of Fiber Reinforced Cementitious Matrix (FRCM) composites. The reinforcement was made with basalt fiber fabric impregnated with epoxy resin, coupled with an inorganic gypsum-based matrix and applied on straight and curved masonry substrates. Direct shear tests were then carried out to evaluate the adhesion behavior of the FRCM systems and the increase in load-bearing capacity of a generic reinforced masonry section.
Negli ultimi anni la tecnologia dei compositi fibrorinforzati si è diffusa nel campo dell’ingegneria strutturale per riabilitare opere esistenti. Tali sistemi permettono di aumentare la capacità di carico dell’opera strutturale e migliorare il comportamento in caso di sisma, evitandone la demolizione. Il seguente lavoro riporta un inquadramento teorico e discute i risultati ottenuti da un’indagine sperimentale sul comportamento dei compositi a matrice cementizia fibrorinforzata (FRCM). Il rinforzo è stato realizzato con tessuto in fibre di basalto impregnate con resina epossidica, accoppiato con una matrice inorganica a base di gesso e applicato su substrati in muratura rettilinei e curvi. Sono state poi eseguite prove di taglio diretto per valutare il comportamento di adesione dei sistemi FRCM e l’aumento di capacità portante di una generica sezione in muratura rinforzata.
PROVE DI TAGLIO DIRETTO SU CAMPIONI IN MURATURA RINFORZATI CON FIBRE DI BASALTO
TISO, BRANDO
2023/2024
Abstract
In recent years, fiber-reinforced composite technology has spread to the field of structural engineering to rehabilitate existing works. These systems make it possible to increase the load capacity of the structural work and improve its behavior in the event of an earthquake, avoiding its demolition. The following work reports a theoretical framework and discusses the results obtained from an experimental investigation on the behavior of Fiber Reinforced Cementitious Matrix (FRCM) composites. The reinforcement was made with basalt fiber fabric impregnated with epoxy resin, coupled with an inorganic gypsum-based matrix and applied on straight and curved masonry substrates. Direct shear tests were then carried out to evaluate the adhesion behavior of the FRCM systems and the increase in load-bearing capacity of a generic reinforced masonry section.File | Dimensione | Formato | |
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https://hdl.handle.net/20.500.12608/63765