Utilize este identificador para referenciar este registo: http://hdl.handle.net/10362/19338
Título: Performance-based methods for masonry building rehabilitation using innovative leaching and hygrothermal risk analyses
Autor: Brás, Ana
Valença, Andreia
Faria, Paulina
Palavras-chave: Heritage
climatic changes
performance-based design
Humidity buffering
Data: 15-Set-2016
Editora: Elsevier
Resumo: The design and selection of a retrofitting solution can be carried out through performance-based methods (according to constructive materials behaviour, hygrothermal and occupants’ behaviour or climatic conditions) as an alternative to the deem-to-satisfy approach. The future likelihood of saturated conditions in masonry building fabrics is increased by the consequences of climatic changes, enhancing the need of selecting adequate solutions for buildings retrofitting. As it was intended to propose the optimal solutions for the preservation of a Portuguese convent, major issues such as the high level of relative humidity inside the building and the leaching phenomenon of the mortar joints between bricks masonry were taken into account as a potential degradation causes. In situ inspection was made together with the analysis of the existing documentation regarding the building. The selection of the best retrofitting measures was supported by innovative leaching and hygrothermal risk analyses using probabilistic approaches. The probability of leaching of the mortar joints is minimised if NHL5 mortars are used for re-pointing when compared to NHL2 or NHL3.5 mortars. Regarding the hygrothermal performance of the building, indoor comfort increases 10% by increasing the Moisture Buffering Value of the indoor surface using eco-efficient earth plasters.
Peer review: yes
URI: http://hdl.handle.net/10362/19338
DOI: http://dx.doi.org/10.1016/j.scs.2016.09.010
Versão do Editor: http://ac.els-cdn.com/S221067071630172X/1-s2.0-S221067071630172X-main.pdf?_tid=c43fabc0-8eeb-11e6-a1a8-00000aacb362&acdnat=1476105574_8dab5c4dc882bad513ab0a30d893184e
Aparece nas colecções:FCT: DEC - Artigos em revista internacional com arbitragem científica

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