Simplified method design of high-performance concrete with and without steel fiber

This work proposes a simplified methodology, based on some literature methods of concrete formulation and tests of optimizations in laboratory, for the determination of a composition of a high-performance concrete "HPC" and high performance fiber concrete "HPFC". To do this, a broad characterization (physical and mechanical) of materials has been conducted. Followed by preliminary study aimed at optimizing the superplasticizer rate (0.65 to 1 %) and cement (500-700) kg/m3 based on compressive strength tests of (3, 7, 28 days) and workability measures. The mechanical characteristics and porosity of optimal HPC were measured. Thus, the effect of a new generation superplasticizer, which allowed the reduction of W/C ratio at 0.29, could be considered. The latter permits to obtain a HPC with a good mechanical performance and with low porosity. The proposed methodology allowed at this stage of the study, to make good HPC and remains to be adjusted and completed for HPFC design..