In an ongoing research project, discrete steel fibers are being used in a self-compacting concrete (SFRSCC) to replace completely steel stirrups for pre-fabricated beams reinforced longitudinally with pre-stressed glass fiber reinforced polymer (GFRP) and steel bars. To take the advantages of the non-corrodible character and high tensile strength of GFRP bars, the minimum SFRSCC cover needs to be determined in…

In recent years, pedestrian bridges built from composites materials have notably increased. This growth is related to the durability problems of traditional materials, as well as the need for fastest construction times. In this context, fiber reinforced concrete (FRC) becomes an important material in this type of structures, since the ductility, high post-cracking tensile strength, high compressive stiffness and strength…

The use of steel fibres for the reinforcement of concrete structures is as competitive as higher is the support redundancy, and as many stress components develop in the structure. Slabs supported on piles or columns (here designated by elevated slabs) are this type of structures, where the statically indeterminate degree is dependent on the number of columns/piles, and five stress…

Fibre Reinforced Concrete (FRC) can be very effective in precast pre-stressed high strength concrete structures, since shear reinforcement and passive longitudinal bars can be totally replaced by fibre reinforcement. To simulate adequately the fibre reinforcement benefits, material constitutive models, able of capturing the crack initiation and crack propagation need to be used, under the frame-work of FEM-based analysis. In the…

A high strength Steel Fibre Reinforced Self-Compacting Concrete (SFRSCC) of high ductility was developed. To evaluate the contribution of steel fibre reinforcement for the flexural resistance of laminar structures, an experimental program was carried out with slab strips of distinct longitudinal reinforcement ratio, submitted to four point loads. A total of twelve slab strips were tested, grouped in three series…