Abstract
The European Commission has introduced a whole range of policies and initiatives to promote the product eco-innovation and
the environmental impacts reductions. One of the key topic for the reduction of the environmental impacts is the waste recycling
and reuse (turning waste into useful resources). A teamwork of Politecnico di Milano has developed a research work, still
ongoing and continuously updated, called “The usefulness of the useless. Cross-sectorial evaluation of waste in construction”
which regards the possible reuse of pre-consumer scrapes/waste, deriving from various sectors, as secondary raw materials for
the supply chains of the building sector. The goals of research work are the identification of the chains with high production of
pre-consumer waste and scraps, the classification of these wastes by typology, the definition of scenarios for the
reuse/valorization of the identified waste and the improvement of the environmental profile of products through an integration of
recycled content. The research starts from the study of the most significant supply chains inside various sectors, analyzing the
input/output and defining typologies and characteristics of waste/scrapes. To simplify the identification of recycling scenarios,
the supply chains and related typologies of scraps have been classified according to a typical Italian filing system code. Then the
data have been collected in a matrix used to identify feasible strategies and scenarios for the valorization of waste (this represent
the first result of the work). The same matrix is also useful for public and private stakeholders for pursuing strategies aiming to
the generation of positive externalities, at local and at global level. The next step is the proposal of new products deriving from
the waste/scraps collected during the first phase.