ABSTRACT
Many methods of concrete mix design, often empirical, exist worldwide. Because of their particular properties, presented in the other chapters of the present book, the introduction of recycled aggregates (RA) requires adaptations of these methods. This chapter makes first a summary of these particular properties of the RA and the expected qualitative consequences on the concrete mix design. In a second part, the chapter focuses on the adaptation of the Dreux-Gorisse method commonly used in France, to account roughly for the introduction of RA in concrete. Finally, the chapter shows the interest of a more scientific method of mix design to refine optimal recycling scenarios.
