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2024 Vol.18, Issue 1 Preview Page

Research Article

Analysis of Heavy-weight Impact Sound Insulation during Curing Period of Floor Finishing Mortar in Apartment Building

공동주택 마감 모르타르 양생 기간에 따른 중량충격음 저감성능 분석

Bon-Soo Koo1
,
Seong-Shin Hong2
,
Sin-Tae Kim1
,
Myung-Jun Kim3*
구 본수1
,
홍 성신2
,
김 신태1
,
김 명준3*
1Ph.D. Student, Department of Architectural Engineering, Graduate School, University of Seoul, Seoul, Korea
2Senior Researcher, Future Technology Center, Smart-eco team, DLenc, Seoul, Korea
3Professor, Department of Architectural Engineering, University of Seoul, Seoul, Korea
1서울시립대학교 대학원 건축공학과 박사과정
2DL이앤씨 미래기술센터 스마트에코팀 차장
3서울시립대학교 건축학부 교수
*Corresponding Author
28 February 2024. pp. 61-71
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Abstract

In this study, we compared the heavy-weight impact sound reductions by bang machine and rubber ball according to the curing period of finishing mortar at construction sites of apartment. And the changes of reductions before and after mortar crack sealing were examined. As a result, it was found that the performance differences of impact sound insulation in single number quantity (SNQ, LiA,Fmax) were minimal after the 4-week curing period of the finishing mortar in case of the bang machine. Similarly, in case of the rubber ball, the performance differences were also decreased within 1.0 dB after the 4-week curing period. Therefore, it can be estimated that the curing period of the finishing mortar must be secured for at least 4 weeks for the reliable test result of impact sound insulation. In addition, the improvement of impact sound insulation (SNQ, LiA,Fmax) by mortar crack sealing were 0.8 to 2.5 dB for the bang machine. Even though the improvement for the rubber ball were insignificant in comparison with the bang machine, the results showed that finishing mortar crack sealing is an essential requirement to prevent deterioration in impact sound insulation.

Keywords
Finishing mortar
curing period
Heavy-weight impact sound
키워드
마감 모르타르
양생 기간
중량충격음
References
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Information
  • Publisher :Korean Institute of Architectural Sustainable Environment and Building Systems
  • Publisher(Ko) :한국건축친환경설비학회
  • Journal Title :Journal of Korean Institute of Architectural Sustainable Environment and Building Systems
  • Journal Title(Ko) :한국건축친환경설비학회논문집
  • Volume : 18
  • No :1
  • Pages :61-71
  • Received Date : 2024-01-09
  • Revised Date : 2024-02-16
  • Accepted Date : 2024-02-17
  • DOI :https://doi.org/10.22696/jkiaebs.20240006
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