Il ruolo dei rifiuti edilizi nei processi di efficientamento del metabolismo urbano

Density and environmental design address to a renewed and controlled urban quality. It is not enough to minimize the use of natural resources but favor the recyclability and containment of waste, the durability of the “artefacts” (materials, buildings, urban fabrics, cities), reduce polluting emissions, promote the use of renewable resources. Reference is therefore made to new urban metabolism processes (what a nourishment represents and what a waste) that, within a circular economy, in construction also means the reuse and recycling, always into the building sector, of its own waste. On this topic a contribution is made here through: analysis of the context, of the tools and regulations that accompany the construction sector towards building 4.0 to recover raw materials and not continue to press on the scarce resources of the planet. Examples taken from national and international research (commissioned at the Sapienza of Rome Interdepartmental Center for Territory Construction Restoration and Environment, CITERA) for identify, following the evaluation of incoming and outgoing material and energy flows in sampled urban contexts, more adequate prevention and reduction solutions for building (construction and demolition) waste. The findings confirm that for the efficiency of urban metabolism the approach must be circular; combining technological progress through the Competence centers with an industrial set-up and consequent lower environmental impact.