Mechanical properties of fiber reinforced self-compacted concretes

The use of Fiber-Reinforced Self-Compacting Concrete (FRSCC) is of particular interest for several applications, such as tunnel lining, flooring and structural reinforcement. In the precast industry, it can help to reduce the amount of ordinary steel reinforcement bars in many structures. However, the mix design of this special concrete still represents a crucial point, mainly related to the homogeneity of the mixtures and the reliability of their performances. This paper aims to compare fresh and hardened state properties of SCC and FRSCC mixtures designed to meet industrial and applicative requirements. Results mainly showed that considerable amounts of fibers can be incorporated and well dispersed into a SCC mixture, without the workability being affected too negatively by it. However, during the tests, FRSCC produced by different concrete plants according to the same mix composition showed different mechanical properties due to the use of different aggregates.