‘취약부 기밀 보강’의 세대 간 공기전달 소음 저감 효과에 관한 실증 연구

초록

This study aimed to empirically validate reduction methods for inter-floor noise, a critical residential issue in apartment buildings, specifically focusing on airborne sound transmitted through gaps such as pipe ducts. A “targeted airtightness reinforcement” intervention was implemented on bathroom pipe ducts and electrical inlets within a single unit in an actual living environment (Living Lab). The airtightness performance (n50) of the entire unit and the inter-floor airborne sound insulation performance (D) of two bathrooms were measured and compared before and after the intervention, in accordance with KS F ISO 16283-1. The results indicated that the airtightness performance of the entire unit showed a marginal improvement of approximately 2.3%, changing from 2.20 ACH before construction to 2.15 ACH after construction. In contrast, the sound insulation performance improved by 1.9 dB (from 50.3 dB to 52.2 dB) in the master bedroom bathroom and by 1.2 dB (from 49.5 dB to 50.7 dB) in the secondary bedroom bathroom. These findings suggest that reinforcing “local acoustic weak points,” which serve as key noise transmission paths, yields substantial and significant effects on inter-floor noise reduction, even with minimal changes to the overall airtightness of the unit.

키워드