https://hdl.handle.net/10259/8932 2026-04-29T02:29:17Z 2026-04-29T02:29:17Z Briones Llorente, Raúl Calderón Carpintero, Verónica Gutiérrez González, Sara Montero García, Eduardo Rodríguez Sáiz, Ángel https://hdl.handle.net/10259/8944 2024-05-14T11:39:38Z 2019-06-01T00:00:00Z

Testing of the Integrated Energy Behavior of Sustainable Improved Mortar Panels with Recycled Additives by Means of Energy Simulation Briones Llorente, Raúl; Calderón Carpintero, Verónica; Gutiérrez González, Sara; Montero García, Eduardo; Rodríguez Sáiz, Ángel Present waste management policies aim to reduce waste environmental impacts and improve resources’ efficiency. The use of waste and recycled materials to develop green construction materials are attracting researchers worldwide to develop new solutions addressed to increase the sustainability of buildings. This work presents a study of a new recycled mortar panel from the point of view of its contribution to the sustainability of buildings. Materials from industrial waste, as rigid polyurethane foam and electric arc furnace slags, are used as an additive of prefabricated mortar panels. The new proposed panels must have good thermal behavior with respect to the heat transfer interactions with the outside temperature and relative humidity, when compared to traditional brick or concrete. A test building with two kinds of representative uses, which are both residential and tertiary, and located in three cities of Spain with different climates, will be energy simulated in order to assess the thermal behavior of new construction or refurbished opaque ventilated façades with the new mortar panel. The thermal behavior of the new mortar panels would be studied by means of two energy assessments: (i) the evaluation of the influence of the new mortar panel in the energy demand of the whole building when compared to traditional materials, and (ii) the detailed analysis of the transient inner surface temperature of the space walls when using the new mortar panel. Based on the results obtained from the energy simulations performed, it follows that the thermal behavior of the mortar panel is, at least, equivalent to those of the other two materials, and even better in some aspects.

2019-06-01T00:00:00Z Salas García, Miguel Ángel Pérez Acebo, Heriberto Calderón Carpintero, Verónica Gonzalo Orden, Hernán https://hdl.handle.net/10259/8931 2024-04-16T00:05:16Z 2018-01-01T00:00:00Z

Bitumen modified with recycled polyurethane foam for employment in hot mix asphalt Salas García, Miguel Ángel; Pérez Acebo, Heriberto; Calderón Carpintero, Verónica; Gonzalo Orden, Hernán A wide variety of modifiers have been applied to bitumen in order to enhance their properties and performance. Among them, polymers have been mainly used. The aim of this paper is to assess the use of polyurethane foam waste as a bitumen modifier for hot mix asphalts. The polyurethane foam is a by-product of the manufacturing of polyurethane for thermal insulation. From a bitumen with a penetration grade of 50/70, various samples with percentages of waste material in weight ranging from 1% to 5% were produced and tested. Samples with 5% of waste material or more became rough and were refused due to their poor workability. A bituminous mixture with modified bitumen with a 4% of polyurethane was manufactured and compared with a sample with the same aggregates and original bitumen. Results in Marshall test showed that a mix with polymer modified bitumen yielded improvements in stability and a lower deformability. This result suggests that the employment of polyurethane foam waste is a promising bitumen modifier, contributing also to recycle waste materials.; Una gran variedad de modificadores se han aplicado al betún para mejorar sus propiedades y rendimiento. Entre ellos, los polímeros han sido principalmente utilizados. El objetivo de este artículo es evaluar el uso del residuo de espuma de poliuretano como modificador de betún en mezclas bituminosas en caliente. La espuma de poliuretano es un residuo que se obtiene durante la fabricación del poliuretano para aislamiento térmico. A partir de un betún de penetración 50/70, se fabricaron y analizaron varias muestras con porcentajes de residuo en peso entre el 1 y el 5%. Las muestras con porcentajes del 5% de residuo o superiores produjeron un material áspero y se descartaron debido a su poca trabajabilidad. Se fabricó una mezcla bituminosa con un 4% de porcentaje de betún modificado con residuo de poliuretano y fue comparado con una muestra con los mismos áridos y el betún original. Los resultados en el test de Marshall mostraron que la mezcla con betún modificado provocaba un aumento en la estabilidad y una menor deformación. Estos resultados sugieren que el empleo de residuo de espuma de poliuretano es un prometedor modificador de betún, contribuyendo además al reciclado de materiales de desecho.

2018-01-01T00:00:00Z