Researchers from the University of Burgos (UBU) have developed a fire-resistant cement precast lightened with industrial waste of polymeric origin, from recycled vehicle roofs, made in the form of a block for the construction of walls or a similar structure.
New and innovative aspects
The novelty of the invention is based on the use of the waste from the roofs generated in the automobile industry, which is valued as raw material with added value for its incorporation into the precast industry of the Construction Sector. The percentage of residue present in the final material depends on the required properties of the final product, obtaining properties in the hardened state sufficient to be able to apply the current legislation.
Main advantages of its use
- Replacement of part of the fine and coarse aggregate of the precast mortar by residues of complete roofs from the automotive industry.
- Additives “à la carte”, polymeric in nature, which are added, maintained and even improved mechanical resistance within the necessary reference values required by European regulations. It supposes a saving of base structure and a greater workability.
- Greater thermal insulation of the final envelope, as well as a good behavior against temperature and against fire (non-combustibility).
- Recycling of waste for the construction of materials, moving from waste to new raw materials, with the reduction of the environmental impact that it entails.
- Reduction of the weight of the material without affecting its properties.
The characteristics and nature of construction materials, based on cement, make it possible to enhance foams that come from polyurethane insulating panels with remains of other materials (adhesives, metal oxides, remains of paint and / or plasters, etc.). The cement is of the Portland Cement type with a mass composition of 95-100% clinker and 0-5% minor components. This alteration in the components of the precast cement object of the invention helps to maintain its mechanical strength, obtaining recycled materials with certainly structural capabilities, but at the same time, with a low density compared to conventional light mortars. This precast cement lightened with polymer matrix residues provides improvements in the physical characteristics of the precast, with weight reductions of up to 70%.
Potential applications of the tank are as follow:
- Blocks of compact cement that are installed by joining courses with mortar and are worked in a similar way to brick.
- Lintels to be installed on top of joinery frames where bricks are left unattached.
- Panels, plates and foundations for buildings, industrial buildings, etc.
- Manholes for sanitation networks or electrical networks used in urbanizations.
- Concrete pavements and paving stones for pedestrian walkways, landscaped areas and low-traffic roads.
Intellectual property status
Protected by Utility Model U202131039
Current development status
Developed exclusively in the laboratory and validated for industrialization.
Desired business relationship
Commercial Agreement, License Agreement, Technical Cooperation: further development; Technical Cooperation: testing new applications; Technical Cooperation: adaptation to specific needs.