Characterization of New Sustainable Acoustic Solutions in a Reduced Sized Transmission Chamber

[EN] In order to assess the airborne sound insulation of a new material or building solution, access to standardized laboratories, large and expensive facilities, and a sample area of at least 10 m(2) are required. At the research and development stages of new sustainable acoustic materials for construction, it is not easy to make large sample areas available. Moreover, the financial investment in acoustic testing of materials during the research stage in standardized laboratories is excessive. In this work, the assessment of the airborne sound insulation of multi-layer partitions designed with new sustainable materials is presented. The assessed solutions are formed by green composite fiber boards as lightweight elements and a new material designed from sheep wool as absorbent material. The results of these 100% recyclable solutions are compared with lightweight element based solutions, which are commonly used for acoustic insulation. Characterization of those new sustainable solutions for building is leveraged in a reduced sized transmission chamber. The design, construction, and validation of this kind of laboratory are provided. This laboratory enables the assessment of the airborne sound insulation of a material in its research stage.This work was financially supported by the project BIA2013-41537-R (BIAEFIREMAT "Development of new eco-materials and sustainable constructive solutions based on the use of waste and renewable raw materials"), funded by the Spanish Ministry of Economy and Competitiveness and co-financed with funds from the European Regional Development Fund (ERDF), within the 2013 National RDI Programme Aimed at Society's Challenges.Rey Tormos, RMD.; Alba, J.; Rodríguez-Vercher, J.; Bertó Carbó, L. (2019). Characterization of New Sustainable Acoustic Solutions in a Reduced Sized Transmission Chamber. Buildings. 9(3). https://doi.org/10.3390/buildings9030060S9