Structural design of fibre-reinforced members should take into consideration fibre distribution and orien-tation, since the residual properties of the material can be different as a function of the cracking plane position and inclination. Therefore, designers must be aware of the possible negative influence of fibre orientation, as well as they may take advantages from its positive effect. Some international standards (i.e. fib Model Code 2010 and German standard DafStb) define a factor that should take into account the orientation effects; however, the value of this factor is generally not given. In this context, the present paper presents the results of an experimental program aimed at evaluating steel fibre distribution in RC beams, as well as design implications in terms of orientation factors. RC beams (0.15 m x 0.70 m x 4.10 m) were cast at Magnetti Building (Carvico, Italy) factory following the most common casting process adopted in practice by using vibrated and self-compacting concrete.
Fibre distribution in RC beams: design implications
Bruno Leporace Guimil;Antonio Conforti;Giovanni Plizzari;Pedro Serna;
2019-01-01
Abstract
Structural design of fibre-reinforced members should take into consideration fibre distribution and orien-tation, since the residual properties of the material can be different as a function of the cracking plane position and inclination. Therefore, designers must be aware of the possible negative influence of fibre orientation, as well as they may take advantages from its positive effect. Some international standards (i.e. fib Model Code 2010 and German standard DafStb) define a factor that should take into account the orientation effects; however, the value of this factor is generally not given. In this context, the present paper presents the results of an experimental program aimed at evaluating steel fibre distribution in RC beams, as well as design implications in terms of orientation factors. RC beams (0.15 m x 0.70 m x 4.10 m) were cast at Magnetti Building (Carvico, Italy) factory following the most common casting process adopted in practice by using vibrated and self-compacting concrete.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
