CIRCULARITY OF CONSTRUCTION MATERIALS IN ARCHITECTURAL HERITAGE PRESERVATION

Historic buildings represent an ensemble of related to architecture, materials and technology of the era in which they were built and contribute to the knowledge of contemporary ones. Materials resulting from the demolition of old buildings, such as: bricks, wood and vegetal materials, concrete, gravel, stone and sand, masonry and rubble, metals, plastic, glass, drywall, cardboard and paper, sanitary fixtures, fibers (asbestos, glass, steel, natural), can get a new life, becoming part of a new building, streets, facades or even a city, in the context of circular architecture and the Smart City concept. The case of the specimens based on polyurethane waste will be discussed in this paper, as partial substitutes in the composition of new building structures. Also, methods for characterization and testing of these new compositions will be discussed and evaluated.