INVESTIGADORES
RUANO SANDOVAL gonzalo Javier
artículos
Título:
Shear retrofitting of reinforced concrete beams with steel fiber reinforced concrete
Autor/es:
GONZALO RUANO; FACUNDO ISLA; RODRIGO ISAS; DOMINGO SFER; BIBIANA LUCCIONI
Revista:
CONSTRUCTION AND BUILDING MATERIALS
Editorial:
ELSEVIER SCI LTD
Referencias:
Lugar: Amsterdam; Año: 2014 vol. 54 p. 646 - 658
ISSN:
0950-0618
Resumen:
With the objective of evaluating the performance of steel fiber reinforced concrete (SFRC) as a retrofitting
material for reinforced concrete beams the experimental study of reinforced concrete beams repaired and
strengthened with a SFRC jacketing and tested under shear is presented in this paper.
The reinforced concrete beams were designed with high amount of longitudinal steel and minimum
transverse reinforcement so that they present shear failure. Some of the beams were strengthened with
very fluid high strength SFRC jacketing and some of them were first tested under shear to produce some
damage and then they were repaired with the same technique. Plain concrete and SFRC with two different
fiber dosages, 30 kg/m3 and 60 kg/m3, were used for the reinforcement.
The experimental program showed the possibility of performing the retrofitting at work place. The
repaired beams showed excellent strength and deformation capacity restitution. The strengthened beams
exhibited increase of load bearing capacity. The addition of fibers to the concrete played an important
role in the prevention of the jacketing debonding from the beams.