The invention relates to the manufacture of non-structural lightweight concretes made from polyurethane pellet waste from the recycling process of refrigeration appliances.
The manufacturing process involves replacing all or part of the aggregates in concrete with these polyurethane pellets (PUR-pellets). The concrete is obtained by mixing cement and water with only PUR-pellets, or mixtures of PUR-pellets and other natural and/or artificial aggregates.
The tests and trials conducted show that these concretes obtained by incorporating polyurethane pellet waste (PUR-pellet) exhibit improved thermal insulation properties and lower density. These concretes could be used to produce prefabricated masonry units and in the implementation of construction solutions that leverage their performance characteristics in the building sector.