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Research Article

Investigation of sound insulation performance changes in fire compartment penetrations for firestop seal inspection

내화채움구조 점검을 위한 방화구획 관통부 차음성능 변화 연구

Dae-Hoi Kim1
,
Jeong-Ho Jeong1*
,
Seung-Jae Lee1
,
Hyo-Jin Lee1
,
In-Kwon Kim2
김 대회1
,
정 정호1*
,
이 승재1
,
이 효진1
,
김 인권2
1한국화재보험협회 부설 방재시험연구원
2(주)에스엠인스트루먼트
*Corresponding Author
30 November 2025. pp. 694-708
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Abstract

To minimise human and property damage caused by the spread of smoke and flames during a fire, it is essential to ensure that fire compartment penetrations are properly sealed and maintained. Although the most reliable method for inspecting fire compartment penetrations is to physically open the installed fire-resistant sealing structure, this approach presents practical difficulties, as the structure must be reconstructed after inspection. Consequently, a non-destructive testing technology for evaluating fire-stopping systems is required. Measurements of airborne sound insulation were conducted on thirteen representative fire compartment systems commonly used in buildings. The results showed a clear distinction between conditions with and without fire-stopping installation. Firestop configurations with integrated pipe fixings and board-type cable penetrations exhibited lower acoustic insulation compared with those using dedicated sealing materials, due to the presence of gaps.For future applications, it is necessary to identify the most appropriate frequency bands that demonstrate significant differences in sound insulation performance, thereby enabling more accurate assessment of fire compartment penetration integrity during both construction and maintenance phases. Furthermore, measurements using an acoustic camera successfully distinguished between installed and non-installed fire-resistant sealing structures.

Keywords
Fire compartment
Fire proof filled structure
Air-borne sound insulation
Acoustic camera
Sound leakage

화재시 연기 및 화염 전파로 인한 인명 및 재난 피해를 최소화하기 위한 방안으로 방화구획 관통부를 밀실하게 시공하고 유지관리되는지를 점검하기 위한 방법에 관한 것이다. 방화구회 관통부의 점검은 시공된 내화채움구조를 개방하여 확인하는 것이 가장 확실하지만 점검 후 다시 시공해야하는 어려움이 있다. 이와 같은 이유로 방확구획 관통부 내화채움구조에 대한 비파괴 점검기술이 필요하다. 건축물에서 사용하는 방화구획을 대표할 수 있는 13종 방화구획에 대한 공기전달음 차단성능 측정, 비교 결과 방화구획을 시공하지 않은 조건과 시공 하지 않은 조건은 명확하게 구분할 수 있는 것으로 나타났다. 파이프 관통부 고정구 일체형과 케이블관통부 보드타입의 경우 틈새가 발생하여 채움재를이용하는 것에 비해 차음성능이 낮게 나타났다. 향후 여러 가지 내화채움 구조로 시공 단계별, 유지관리 방안 마련을 위해 더 큰 차음성능 차이를 나타내는 주파수 대역 등 분석을 통하여 방화구획 관통부의 시공 및 유지관리 상태를 명확하게 판단할 수 있는 적정 주파수대역 결정이 필요하다. 음향 카메라를 활용한 측정 결과 방화구획 관통부 내화채움구조를 시공한 경우와 시공하지 않은 경우를 음향 카메라로 명확하게 구분할 수 있었다.

키워드
방화구획
내화채움구조
공기전달음
음향카메라
누음
References
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Information
  • Publisher :The Acoustical Society of Korea
  • Publisher(Ko) :한국음향학회
  • Journal Title :The Journal of the Acoustical Society of Korea
  • Journal Title(Ko) :한국음향학회지
  • Volume : 44
  • No :6
  • Pages :694-708
  • Received Date : 2025-10-30
  • Accepted Date : 2025-11-24
  • DOI :https://doi.org/10.7776/ASK.2025.44.6.694
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