New approach for the formulation of High Performance Concrete Valorisation of local materials

Abstract High performance concrete (HPC) is an innovative concrete that finds its place in modern buildings. The new high-performance concrete formulation and conception techniques have improved sustainability and acquiring remarkable mechanical properties compared to conventional concretes. The objective of this work is to make a contribution to understanding the influence of factors such as the W/ C ratio and the granular class on the mechanical and physical properties of high performance concretes. In the formulations of HPC aggregates by their high mass and volume proportion, play an important role, the Sherbrook and Dreux-Gorisse method has been used. When selecting aggregates it is necessary to know their intrinsic properties. These properties influence the performance of concrete in particular the quality of the granulate cimentary adhesion. At the end of our work, the examination of the results obtained made it possible to establish the correlations between the formulations studied and the physico-mechanical characteristics of the concrete compositions (HPC 25, HPC 16, HPC 8). The results of this study show that the use of three granular classifications (DMAX8, DMAX16 and DMAX25) and three Report W / C (0.25, 0.30, and 0.35) in two different conservation environment (EP drinking water and sea water ), clearly proves that the composition of high performance concrete is HPC25 concrete with an W/ C = 0.25 ratio has reached the largest mechanical strength of 80 MPa for different environments of conservation. When selecting aggregates it is necessary to know their intrinsic properties, these properties influence the performance of concrete. In general, there is a slight decrease in the compressive resistance of the specimens stored in seawater, it can be said that the conservation life has not had effect on the resistance (28 days). The effect of aggressive environment can appear in the long term.