Steel fibre reinforced concrete (SFRC) is increasingly considered as a profitable replacement for diffused reinforcement like welded steel mesh, especially for thin cross sections. In this case fire becomes a very important condition in the design. Previous experimental research showed…
Steel fibre reinforced concrete (SFRC) is increasingly considered as a profitable replacement for diffused reinforcement like welded steel mesh, especially for thin cross sections. In this case fire becomes a very important condition in the design. Previous experimental research showed the benefits in fire resistance of steel fibres when structural elements are bent. A more complete mechanical characterization of the mate- rial, when exposed to high temperature, is here presented. The research was instrumental to validate the fire design approach suggested in the recent Italian National Recommendations (CNR-DT 204/06) for design of fibre reinforced concrete structures. Particular attention is given to the reliability of a linear softening consti- tutive law proposed for uniaxial tension.