Discrete steel fibres can increase significantly the bending and the shear resistance of concretestructural elements when Steel Fibre Reinforced Concrete (SFRC) is designed in such a way that fibrereinforcing mechanisms are optimized. To assess the fibre reinforcement effectiveness in shallow structuralelements failing in bending and in shear, experimental and numerical research were performed. Uniaxialcompression and bending tests were executed to derive the constitutive laws of the developed SFRC. Using across-section layered model and the material constitutive laws, the deformational behaviour of structuralelements failing in bending was predicted from the moment-curvature relationship of the representative crosssections. To evaluate the influence of the percentage of fibres on the shear resistance of shallow structures, threepoint bending tests with shallow beams were performed. The applicability of the formulation proposed byRILEM TC 162-TDF for the prediction of the shear resistance of SFRC elements was evaluated. Inverseanalysis was adopted to determine indirectly the values of the fracture mode I parameters of the developedSFRC. With these values, and using a softening diagram for modelling the crack shear softening behaviour, theresponse of the SFRC beams failing in shear was predicted.
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