INTECIN   20395
INSTITUTO DE TECNOLOGIAS Y CIENCIAS DE LA INGENIERIA "HILARIO FERNANDEZ LONG"
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Post-cracking response of hybrid recycled/industrial steel fiber-reinforced concrete
Autor/es:
PEPE, M., ; CAGGIANO, A. ; MARTINELLI, E., ; FAELLA, C.; LIMA, C.,
Reunión:
Congreso; 2nd International Workshop on ?Durability and Sustainability of Concrete Structures?; 2018
Resumen:
The present study aims at investigating the influence of Recycled Steel Fibers (RSFs) recovered from waste tires on the resulting post-cracking response of Fiber-Reinforced Concrete (FRC) mixtures, when they are employed for replacing conventional Industrial Steel Fibers (ISFs). It moves from the results of four-point bending tests carried out on a series of specimens made of Hybrid FRC, namely reinforced by both RFSs and ISFs. Then, the paper proposes a theoretical model based on a meso-mechanical formulation merged into a cracked-hinge approach. The model is capable of taking into account explicitly the diverse geometric and mechanical properties of RSFs and ISFs and, hence, it is employed for interpreting the results of the aforementioned bending tests. Some comparisons between the experimental results and the theoretical predictions are presented with the aim to corroborate the mechanical consistence of the proposed model.Finally, it is worth highlighting that this study has been carried out at the STRuctural ENGineering Testing Hall (STR.ENG.T.H) of the University of Salerno, as part of the ?SUPERCONCRETE? Project (H2020-MSCA-RISE-2014 ? n. 645704).