Fiber-reinforced polymers (FRPs) are widely used in civil-engineering field for strengthening and retrofitting existing concrete structures. In the context of strengthened RC beams subjected to bending loads, a critical issue is the FRP debonding, mainly consisting in a brittle failure mechanism. In this paper, analytical relationships proposed by different technical standards and guidelines, are consistently summarized and compared. In particular, a wide database of experimental results obtained from debonding tests, and available in the recent literature, is reported and discussed. Moreover, experimental results obtained via 42 double shear tests on basalt-based FRP (BFRP) sheets attached on concrete supports are presented. In this light, soundness and effectiveness of available technical relationships, mainly proposed for FRP-concrete systems, based on carbon, glass and aramid fibers, are critically discussed with reference to the use of BFRP.
Monaldo, E., Nerilli, F., Vairo, G. (2018). Technical standards for debonding in FRP-concrete systems: An experimental contribution for basalt-FRP. In 9th International Conference on Fibre-Reinforced Polymer (FRP) Composites in Civil Engineering, CICE 2018 (pp.1022-1029).
Technical standards for debonding in FRP-concrete systems: An experimental contribution for basalt-FRP
Monaldo E.
;
2018-01-01
Abstract
Fiber-reinforced polymers (FRPs) are widely used in civil-engineering field for strengthening and retrofitting existing concrete structures. In the context of strengthened RC beams subjected to bending loads, a critical issue is the FRP debonding, mainly consisting in a brittle failure mechanism. In this paper, analytical relationships proposed by different technical standards and guidelines, are consistently summarized and compared. In particular, a wide database of experimental results obtained from debonding tests, and available in the recent literature, is reported and discussed. Moreover, experimental results obtained via 42 double shear tests on basalt-based FRP (BFRP) sheets attached on concrete supports are presented. In this light, soundness and effectiveness of available technical relationships, mainly proposed for FRP-concrete systems, based on carbon, glass and aramid fibers, are critically discussed with reference to the use of BFRP.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
