RT info:eu-repo/semantics/article
T1 A multi-stage analysis of air leakage and acoustic performance on a full-scale test chamber
A1 Elsaei, Ahmed
A1 Machimbarrena Gutiérrez, María de la O
A1 Meiss Rodríguez, Alberto
A1 Poza Casado, Irene
A1 Padilla Marcos, Miguel Ángel
K1 Air infiltration
K1 Airtightness
K1 Sound transmission
K1 Flow regimes
K1 Airborne sound insulation
AB It is imperative to comprehend the intricate relationship between air infiltration and sound transmission in building systems to optimise energy efficiency and acoustic comfort. This study focuses on measuring the performance of a separating wall between two spaces in terms of sound insulation and airtightness, under different air flow path configurations. Airtightness and sound insulation measurements were made on a test sample wall mounted in an accredited sound insulation facility, while subsequently increasing the number and size of artificially drilled openings. The diameter of these apertures ranged from 0.67 to 7.09 cm, with the total area of the apertures varying up to 39.50 cm 2 . The variation in diameter and the total number of apertures had a dual impact: it affected airtightness and the flow regime and energy dissipation within the apertures, which in turn may affect sound insulation. The acoustic results presented an unexpected behaviour: conventional wisdom suggests that increasing the number of openings should lead to a decrease in sound insulation; however, the study observed that adding relatively small holes (0.67/1.4 cm diameter) resulted in constant or less sound transmission. The results suggest that the diameter of holes affects the flow regime, as indicated by the n exponent values that characterize flow behavior. Furthermore, these variations influence energy dissipation within the openings, which in turn may impact sound insulation. This observation underscores the intricate interplay between airflow and sound transmission in building systems. Further research is required so that the acoustic firm of cracks can be used to estimate the size of cracks in buildings and to provide a prioritization criterion when undertaking retrofitting.
PB Elsevier
SN 2352-7102
YR 2025
FD 2025
LK https://uvadoc.uva.es/handle/10324/78982
UL https://uvadoc.uva.es/handle/10324/78982
LA eng
NO Journal of Building Engineering, Noviembre 2025, Volume 114, 114301, p. 1-15
NO Producción Científica
DS UVaDOC
RD 24-oct-2025