Introduction - On Shear Behavior of Structural Elements Made of Steel Fiber Reinforced Concrete - page 4

Fig. 1.2 Shear research on members without shear reinforcement [ 2 ]

adding bers means fewer brittle shear failures take place e.g., [ 10 , 11 ]

￿

test results indicate that adding bers reduces maximum crack width, average

crack width and average crack spacing [ 7 , 12

￿

14 ]

-

FRC is suitable for structures where diffused stresses are present, and improves
reinforcement in structures with both localized and diffused stresses in combi-
nation with rebars [ 5 ].

￿

RILEM TC162-TDF [ 15 ] produced pioneer design guidelines in which the

contribution to shear resistance is added to that of the concrete as a separate
term, based on the

bers '

s toughness properties.
The approach presented in the Final Draft of the Model Code 2010 [ 16 ] for shear
resistance of FRC members is based on the Eurocode 2 [ 17 ], used to determine
shear contribution in concrete members without shear reinforcement, by adding a
factor based on Minelli

ber '

'

s proposal, which includes the FRC mechanical properties
by modifying the effect of the longitudinal reinforcement ratio. Thus, by