Sound insulation improvement for a window’s solution
- Autores: Rui Ribeiro, Isabel A. Cardoso, Miguel Lopes
- Localización: Tecniacústica 2008: conferencias y comunicaciones de Acústica 2008. V Congreso Ibérico de Acústica y Tecniacustica 2008; 39.º Congreso Español de Acústica. Coímbra, Portugal. octubre, 2008, 2008
- Idioma: inglés
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Resumen
Given the initial acoustic criteria for a façade element, improving the sound reduction index of an existing building element, a window glazing is analysed and improvements were introduced in order to achieve competitive advantage when acoustic insulation is determinant factor when choosing a solution. At a first stage, an evaluation of the existing frame and chosen glass was made, to estimate the soundreduction index. Preliminary correction measures were defined. A scaled window sample was then acoustically evaluated through sound intensity level measurements and its transmission loss determined. A test rack was built and the measurements were made at a semi-anechoic chamber. The measurements results analysis allowed leakages and weak points identification. Panel junctions showed critical. Additional insulation measures were then introduced and real dimension model was sent to a certified laboratory, to perform standard laboratory measures according to ISO standard 140-3:1998. Finally, the laboratory measurements were compared with the initial intensity measurements and the initial criteria.
