PSI - Issue 78

Paolo Ielpo et al. / Procedia Structural Integrity 78 (2026) 1024–1031

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components: the retrofit system reduces concrete cracking and mitigates slip phenomena between reinforcement and concrete at the joint beam – column interface, promoting a more uniform stress distribution along the beam. Despite these encouraging outcomes, the numerical data obtained so far represents a preliminary analysis; therefore, further targeted experimental investigations are in progress to more precisely quantify the benefits of the SPEAD device on reinforced concrete structures. 7. Acknowledgments This work has been carried out in the context of the 2024 – 2026 DPC- ReLUIS Project WP5 “Integrated and sustainable interventions for existing constructions”, funded by the Italian Civil Protection Department, and the SAFER-REBUILT project ( Sustainable Approaches For Earthquake Resistant_REhabilitation solutions for the BUILT environment ) CUP H93C22000610002. References Biondini, F., & Frangopol, D. M., 2016. 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