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TitleBond of NSM FRP strengthened concrete: round robin test initiative
Author(s)Bilotta, Antonio
Ceroni, Francesca
Barros, Joaquim A. O.
Costa, Inês
Palmieri, Aniello
Szabo, Z. K.
Nigro, Emidio
Matthys, Stijn
Balazs, Gyorgy
Pecce, Marisa
KeywordsNear Surface Mounted technique
FRP materials
Bond test
Round Robin Testing
Bond behaviour
Fiber-reinforced polymer (FRP) materials
Bond behavior
Issue date2016
PublisherAmerican Society of Civil Engineers (ASCE)
JournalJournal of Composites for Construction
CitationBilotta, A.; Ceroni, F.; Barros, J.A.O.; Costa, I.G.; Palmieri, A.;Szabo, Z.K.; Nigro. E.; Matthys, S.; Balazs, G.L.; Peece, M., “Bond of NSM FRP strengthening concrete: round robin test initiative”, Journal of Composites for Construction, Volume 20, February 2016. doi: 10.1061/(ASCE)CC.1943-5614.0000579.
Abstract(s)Despite the extensive research that has been conducted on the debonding behaviour of FRP strengthening systems, no standard methodology has been yet established on its experimental characterization. In this context, to assess the performance and reliability of small scale testing on NSM (near surface mounted) FRP strengthening systems, an experimental program was carried out on a series of nine NSM FRP strengthening systems, in the framework of an international Round Robin Testing (RRT). Eleven laboratories and seven manufacturers and suppliers participated in this extensive international exercise, which regarded both NSM and EBR FRP strengthening systems. Test results obtained for the NSM systems by the participating laboratories are discussed and compared in this paper to investigate the feasibility of the adopted single/double pulling shear test method, to investigate the mechanism of bond between NSM FRP reinforcement and concrete, and to investigate the level of variability obtained between the participating laboratories testing the same material batches. It is concluded that the tested variants in the adopted single/double shear pulling test have a significant influence, stressing the importance of the level of detail of standardized test protocols for bond verification. On overall, given the variants included in this study, the obtained variation in bond stress-slip behaviour between the laboratories remained fairly limited.
AccessOpen access
Appears in Collections:ISISE - Artigos em Revistas Internacionais

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