This work aims to investigate the effectiveness of BFRP composites as strengthening material for beam-like concrete structural elements. The non-linear flexural response of beams strengthened with BFRPs is investigated. An analytical approach, based on the evaluation of the cross-section moment-curvature relationship, that also considers the tension stiffening phenomenon, is developed and applied to a number of study cases. Neverthless, typical failure modes involve also the FRP-concrete end-debonding. This latter occurs as a brittle mechanism that jeopardises the ductility demand required in the structural design concept, becoming a critical issue. In this framework, results of a wide experimental program based on push-pull double shear tests on BFRP-concrete specimens are presented, by proposing suitable correction coefficients for improving the effectiveness of some available technical design rules when BFRP are adopted.
Nerilli, F., Monaldo, E., Vairo, G. (2020). Basalt-based FRP composites as strengthening of reinforced concrete members: Experimental and theoretical insights. In Carcaterra A, Paolone A, Graziani G (a cura di), Proceedings of XXIV AIMETA Conference 2019 (pp. 472-486). Springer [10.1007/978-3-030-41057-5_39].
Basalt-based FRP composites as strengthening of reinforced concrete members: Experimental and theoretical insights
Vairo Giuseppe
2020-01-01
Abstract
This work aims to investigate the effectiveness of BFRP composites as strengthening material for beam-like concrete structural elements. The non-linear flexural response of beams strengthened with BFRPs is investigated. An analytical approach, based on the evaluation of the cross-section moment-curvature relationship, that also considers the tension stiffening phenomenon, is developed and applied to a number of study cases. Neverthless, typical failure modes involve also the FRP-concrete end-debonding. This latter occurs as a brittle mechanism that jeopardises the ductility demand required in the structural design concept, becoming a critical issue. In this framework, results of a wide experimental program based on push-pull double shear tests on BFRP-concrete specimens are presented, by proposing suitable correction coefficients for improving the effectiveness of some available technical design rules when BFRP are adopted.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
