State of knowledge on green concrete with recycled aggregates and cement replacement

Abstract

Since the construction industry is characterized by a huge demand for both energy and raw materials, it is fully concerned by the need for enhancing sustainability, which is certainly the main challenge for all industrial sectors in the twenty-first century. Therefore, several solutions are nowadays under investigation to reduce the environmental impact of concrete production. They often consist of partially replacing the ordinary concrete constituents with recycled ones, in view of the objective of reducing both the demand of raw materials and the amount of waste to be disposed in landfills. The most recent advances in this field are summarized in this chapter, which is intended at drawing the line of the current state of knowledge on “sustainable” structural concrete.