RT info:eu-repo/semantics/conferenceObject T1 Thermal and fire behaviour of cement blocks with recycled roof wastes A1 Arroyo Sanz, Raquel A1 Alameda Cuenca-Romero, Lourdes A1 Alonso Díez, Álvaro A1 González Moreno, Sara A1 Calderón Carpintero, Verónica A1 Gutiérrez González, Sara A1 Rodríguez Sáiz, Ángel K1 Fire resistance K1 Lightweight prefabricated K1 Polyurethane K1 Recycled ceiling K1 Materiales de construcción K1 Building materials K1 Arquitectura sostenible K1 Sustainable architecture AB In accordance with the European politics of reducing the amount of plastics and polymers sited in landfills, the inclusion of compounds such as roof wastes as recycled and reusable materials to replace variable amounts of aggregates is interesting in the production of new construction materials due to their physical and chemical behaviour. Mortars made with Portland cement, sand, water and grinded roof wastes from the automobile industry that replace in different amounts part or all of the aggregates are examined in this study. To try to avoid the mechanical resistance limitation due to the use of roof wastes, the chemical properties of the binders have been modified with non-ionic surfactants that changed the effect on the hydration of the clinker. This variation produces an important change in the mechanical resistance to achieve recycled structural materials with a low density compared to conventional light mortars. In addition, these additives improve other properties including workability, compaction of the matrix, prevent the disintegration of the particles and help to improve the mechanical properties, ductility, thermal resistance and durability against fire to reinforce the materials. These ecomortars have a lower thermal conductivity as more quantity of roof wastes are incorporated, which greatly favours the thermal insulation of the final envelope, as well as a good behaviour against temperature, measured in terms of thermogravimetry and non-combustibility test. With these results, we can consider the use of roof wastes as a sustainable alternative to the materials currently used and then with them we can be able to contribute to a more ecological business model in the building sector. PB WITPress SN 978-1-78466-437-4 YR 2021 FD 2021 LK https://hdl.handle.net/10259/11249 UL https://hdl.handle.net/10259/11249 LA eng NO Comunicación presentada en: 10th International Conference on Computational Methods and Experiments in Material and Contact Characterisation, 7 July 2021 - 9 July 2021, Virtual, Online NO Authors gratefully acknowledge the financial support of BU070P20 Project funded by the Fondo Europeo de Desarrollo Regional (FEDER) of the EU and the Junta de Castilla y León (Spain). DS Repositorio Institucional de la Universidad de Burgos RD 27-abr-2026