Airtightness / Airborne Sound Insulation Study in Accredited Sound Insulation Facilities
54º Congreso Español de Acústica — Tecniacústica 2023
Abstract
The potential relation between airtightness and acoustic performance of constructive solutions is not yet well known and described, although it has been widely proved that both phenomena have strong links. The objective of this research is to provide additional experimental knowledge in this field of research, working in a controlled environment, thus reducing the number of variables affecting both acoustic performance and airtightness. The test specimen is a hollow tongue and groove brick with mortar rendering wall. The acoustic performance of the original test specimen has already been tested in AUDIOTEC´s accredited sound transmission facilities. The research consists in gradually making holes on the test sample and evaluating airtightness and airborne sound insulation as the amount of “leaks” increases. Airtightness has been measured with a blower door test and the sound insulation has been measured using AUDIOTEC´s instruments and facilities.