Description du projet
Transformer les déchets de démolition en nouveaux contrats
Les déchets de construction et de démolition (C&D) proviennent de l’édification, de la rénovation et de la destruction de maisons et d’autres infrastructures. Le béton étant l’élément le plus utilisé dans la construction, une technologie innovante a été mise au point pour produire des granulats de ce matériau recyclé de haute qualité destinés à être utilisés dans un nouveau béton. Toutefois, cette technologie se heurte encore à des obstacles techniques. En outre, il existe des matériaux de déchets de C&D moins connus et émergents pour lesquels aucune solution technologique et commerciale n’a encore été proposée. Le projet VEEP, financé par l’UE, vise à éco-concevoir, développer et démontrer l’efficacité de nouvelles solutions technologiques rentables. Ces solutions conduiront à des approches circulaires innovantes en boucle fermée pour le recyclage des déchets de C&D en de nouveaux éléments préfabriqués en béton multicouche. Ces éléments intégreront de nouveaux bétons et matériaux de super-isolation produits en utilisant au moins 75 % de déchets de C&D recyclés.
Objectif
Around 461 million ton/year of C&DW are generated in EU28. Recent studies on the characterization of C&DW samples at European level revealed a predominant fraction of concrete (52% average). Over the last years, novel technology has been developed aiming to guarantee high quality recycled concrete aggregates for use in new concrete, thereby closing the concrete loop. The most advanced concrete recycling technologies currently produce coarse (>4mm) recycled concrete aggregates by removing cement paste from the surface of the aggregates. However, the fine (0-4 mm) fraction, ca. 40% of the concrete waste, still faces technical barriers to be incorporated into new concrete and consequently, is often down-cycled. At the other extreme, there are minor (e.g. glass) and emerging (e.g. mineral wool) C&DW materials, currently accounting for 0.7% of the total, but revealing growing rates as consequence of European regulations. Those emerging C&DW streams have not yet found technological and business solutions, being mostly landfilled. On the other hand, concrete is the most widely used material in building, with a growing trend towards prefabrication. The European precast concrete sector faces diverse needs for resource efficiency improvement (reduction in natural resource consumption and metabolization of waste materials, reduction in carbon footprint and embodied energy, design for reuse, increase in process efficiency and waste minimization, lighter solutions, enhanced thermal performance through novel cost-effective insulating materials). Aiming at facing these challenges, VEEP main objective is to eco-design, develop and demonstrate new cost-effective technological solutions that will lead to novel closed-loop circular approaches for C&DW recycling into novel multilayer precast concrete elements (for both new buildings and refurbishment) incorporating new concretes as well as superinsulation material produced by using at least 75% (by weight) of C&DW recycled materials.
Champ scientifique
Programme(s)
Régime de financement
RIA - Research and Innovation actionCoordinateur
16129 Genova
Italie