Terra cruda e aggregati da costruzione e demolizione: valutazione delle prestazioni meccaniche

Rammed earth is a building material characterized by high quality performances in terms of acoustic, temperature and humidity control, health and safety. Furthermore, rammed earth is an available resource and a minimum amount of energy is used for its transformations process. Because of these qualities, togheter with its reusability when life cycle is over, the research focused on these material and into processes and developed technologies to provide support to the development of legislation for widespread use. Rammed earth is an eco-friendly material, but it could not be a model of sustainability because of its traditional transformation process, based on the consumption of resources. In order to improve the rammed earth sustanability as building material, it is important to cushion the environmental impact, high in the extraction step, converting from linear to circular the transformation process, to value the possibility of absorbing the recycled aggregates, such as from construction and demolition, in place of those non-renewable constituting the original mixture of rammed earth. This paper evalute two case studies based on the reuse of aggregates coming from recovery of construction and demolition wastes prperly treated. The two cases are focused on the evaluation of the mechanical performances of construction elements made with the rammed earth most common techniques, in order to compare the behavior of elements made in a traditional manner with those realized by incorporating recycled aggregates from construction and demolition wastes.