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Resumen El objetivo principal de este paper es ofrecer una resena del utilizo de sistemas de paneles prefabricados en el retrofit de edificios. El retrofit representa un punto focal de la eficiencia energetica, considerando el gran numero de edificios existentes, privados y publicos, en Europa. La necesidad de intervencion en este ambito es enfatizada por las Directivas Europeas, y por la roadmap de Horizon 2020. Varias investigaciones y proyectos se centran en el tema de la prefabricacion en el retrofit, enfatizando la importancia de esta estrategia. La resena de el estado del arte muestra los diferentes enfoques de los paneles prefabricados: una clasificacion critica de estos proyectos diferencia entre sistemas basados en grandes o pequenos paneles, sistemas de ampliacion basados en paneles estructurales y sistemas parcialmente prefabricados. Esta clasificacion es util porque consiente posibles progresos en este campo, enfatizando los adventajas y desventajas de cada sistema. Los asuntos mas importantes son los de diseno, fabricacion, transporte y instalacion. Una resena de estos asuntos es tambien provista, enfatizando los campos de innovacion, y los posibles futuros desarrollos de la prefabricacion en el retrofit de las construcciones. Abstract The main aim of this paper is to provide an overview of the use of prefabricated panels in external building retrofitting. Building retrofit represents a pivotal point in terms of energy efficiency, connected to the great amount of existing buildings, both public and private, all around Europe. The need of intervention is underlined by different European Directives, as well as by Horizon 2020 roadmap. Many research works and projects are focusing on the theme of prefabrication in retrofit, stressing the importance of this strategy. The review of the state of the art shows several approaches in terms of prefabricated panels: a critical classification of these projects distinguish between systems based on large and small panels, systems for extensions based on structural panels, and partially prefabricated systems. The classification is useful as it can help in understanding further development of prefabricated panels, underlining the advantages and disadvantages of the systems. The main challenges are linked to design, fabrication, transport and installation. An overview of those issues is also provided, stressing the main innovation fields to be further investigated, and the possible future developments of prefabrication in building retrofit.

anales de edificación

Retrofit de la construcción mediante paneles prefabricados: una reseña del estado del arte = Building Retrofit through prefabricated panels: an overview on the state of the art.