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TitleRetrofitting of interior RC beam–column joints using CFRP strengthened SHCC: Cast-in-place solution
Author(s)Esmaeeli, Esmaeel
Barros, Joaquim A. O.
Sena-Cruz, José
Fasan, Luca
Li Prizzi, Fabio Raimondo
Melo, José
Varum, Humberto
KeywordsStrain hardening cementitious composite (SHCC)
Near surface mounted carbon fiber reinforced polymer (NSM-CFRP)
Interior reinforced concrete (RC) beam–column joint
Cyclic behavior
Carbon Fibre Reinforced Polymer (CFRP)
Hybrid Composite Plate (HCP)
Issue dateApr-2015
JournalComposite Structures
CitationEsmaeeli, E., Barros, J. A., Sena-Cruz, J., Fasan, L., Prizzi, F. R. L., Melo, J., & Varum, H. (2015). Retrofitting of interior RC beam–column joints using CFRP strengthened SHCC: Cast-in-place solution. Composite Structures, 122, 456-467
Abstract(s)The effectiveness of a repair strategy, for damaged RC beam–column joints, that combines strain hardening cementitious composite (SHCC) and laminates of carbon fiber reinforced polymers (CFRP laminates) is assessed in the present work. According to this technique, the existing concrete cover in the joint zone of the frame is replaced by a self-compacting SHCC. This thin layer of SHCC is reinforced with CFRP laminates that are bonded into the saw cut grooves. Two full-scale severely damaged interior RC beam–column joints were retrofitted using two different configurations of this technique: (i) applying the strengthening system to only the front and rear faces of the specimen; (ii) jacketing all sides of the elements of the specimen with the strengthening system. The effectiveness of these retrofitting configurations is assessed and compared by evaluating experimentally the hysteretic response, the dissipated energy, the degradation of secant stiffness, the displacement ductility and the failure modes of each repaired specimen, and also using the values of these indicators obtained in the virgin state of the specimens. This comparison revealed that the adopted retrofitting strategies can restore and even enhance the performance of this type of structural elements, mainly when the solution based on four-sided jacketing is used.
Publisher version
AccessOpen access
Appears in Collections:ISISE - Artigos em Revistas Internacionais

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