Comportement des bétons à base de granulats recyclés

Abstract

The exhaustion of the natural aggregate layers and the difficulties to open new careers force to seek new sources of supply. The recycling and the valorization of waste are today regarded as a solution with a future in order to answer the deficit between production and consumption and to protect the environment. This memoir seeks to highlight the possibility of using the marble scrap like aggregates for hydraulic concrete. In order to formulate the studied concretes, the characteristics of the aggregates recycled (marble scrap) were been analysed. The study consists in comparing the properties of a concrete of reference at the fresh and hardened state, those of the concretes incorporating of the marble aggregates in substitution of a voluminal fraction from sand, gravels and both whole with rates of substitution of (25%, 50%, 75%, 100%). The work shows the main interest which could have the development and the provision of the experimental results concerning the use of the marble scrap like aggregates recycled for hydraulic concretes.