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2024 Vol.43, Issue 6 Preview Page

Research Article

Floor structure for the reduction of floor impact noise of apartment with concrete slab less than 210 mm

210 mm 미만 콘크리트 슬라브 공동주택의 바닥충격음 저감을 위한 바닥구조 방안

Seong-Shin Hong1
,
Seung-Min Lee2
,
Chan-Hoon Haan2*
홍 성신1
,
이 승민2
,
한 찬훈2*
1DL이앤씨 미래기술센터
2충북대학교 건축공학과
*Corresponding Author
30 November 2024. pp. 724-736
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Abstract

Many technologies have been proposed to mitigate floor impact noise, and advancements in floor structure design and implementation are underway to address this issue in existing apartments. This study aimed to evaluate the effectiveness of floor structure improvements and mortar thickness variations in reducing floor impact noise in aging apartment buildings with slab thicknesses below 210 mm. Two apartments were selected for the study. In one apartment underwent both floor and ceiling structure enhancements. In the other, floor structure improvements were implemented by adjusting mortar thickness. Mortar thicknesses were varied between 20 mm and 50 mm for base mortar and 40 mm and 70 mm for finishing mortar, applied to four households within the same apartment. Floor impact noise levels were measured according to KS F ISO 16283-2:2015 and assessed based on KS F ISO 717-2:2020.Floor impact noise levels were measured according to KS F ISO 16283-2:2015 and assessed based on KS F ISO 717-2:2020. The results indicated a significant reduction in heavyweight impact noise by 17 dB and lightweight impact noise by 16 dB compared to the original floor structure. Additionally, thicker base and finishing mortars correlated with higher reductions in heavyweight impact noise. Lightweight impact noise reduction was most pronounced when incorporating resilient materials and finishing mortars containing Ethylene Vinyl Acetate (EVA) and Expanded Polystyrene (EPS). However, remodeling aging apartments can lead to resonance phenomena within specific frequency bands. Therefore, floor structure design should carefully consider the frequency characteristics of each component, including mortar, to optimize floor impact noise reduction.

Keywords
Floor impact noise
Aging apartment
Remodeling
Mortar thickness

바닥충격음 저감을 위해 많은 기술이 제시되어 왔으며 기존 공동주택 바닥충격음 저감을 위한 바닥구조 개발 및 적용이 진행 중에 있다. 이에 대해, 본 연구는 슬래브 두께 210 mm 미만 노후 공동주택을 대상으로 바닥구조 개선 및 모르타르 두께 변화를 통해 바닥충격음의 저감성능을 파악하고자 하였다. 두 공동주택을 대상으로 세대 내 바닥구조 및 천장구조를 개선하는 주택과 모르타르 두께를 달리하여 바닥구조를 개선하는 주택으로 구분하였다. 모르타르 두께는 기초모르타르 20 mm∼50 mm, 마감모르타르 40 mm∼70 mm로 차이를 두어 동일 공동주택의 네 세대를 대상으로 적용하였다. 세대 내 바닥충격음은 KS F ISO 16283-2:2015를 통해 측정하여 KS F　ISO 717-2:2020에 따라 평가하였다. 측정결과, 기존 바닥구조 대비 중량충격음은 17 dB, 경량충격음은 16 dB 저감되는 효과를 보였다. 또한, 중량충격음은 기초 및 마감 모르타르의 두께가 두꺼움에 따라 높은 저감효과를 보였고 경량충격음은 Ethylene Vinyl Acetate (EVA) 및 Expanded Polystyrene(EPS)가 적용되는 완충재 및 마감모르타르 타설 시 저감효과가 뚜렷하게 나타났다. 다만, 노후 공동주택 리모델링 시 특정 주파수 대역의 공진현상이 발생할 수 있다. 따라서 모르타르를 포함하여 구성요소별 바닥충격음 저감에 효과적인 주파수 특성을 충분히 고려하여 바닥구조를 형성해야 한다.

키워드
바닥충격음
노후 공동주택
리모델링
모르타르 두께
References
1

Ministry of Land Infrastructure and Transport, "Certification and inspection standards of floor impact sound insulation structures in apartments," Rep., 2023-494, 2023.

2

J. O. Yeon, "Current status of post-performance verification system for floor impact sound in apartment houses" (in Korean), Proc. AIK Annual Spring Conference, 42, 368 (2022).

3

H. K. Shin, "2025-2034 research roadmap for floor impact noise" (in Korean), Noise and Vib. 34, 41-46 (2023).

4

The Board of Audit and Inspection of Korea "Operation status of apartment floor impact noise reduction system," Audit. Rep., 2019.

5

J. Y. Chung, "Minor repair technology using floor covering to reduce floor impact sound" (in Korean), Archit. Sci. Rev. 67, 41-44 (2023).

6

C. G. Cho, C. Y. Yun, and M. J. Kim, "Comparison of heavy-weight impact sound pressure level according to slab thickness and floor area" (in Korean), J. Korean Soc. Living Environ. Sys. 22, 768-776 (2015).

10.21086/ksles.2015.10.22.5.768
7

S. T. Kim, H. M. Cho, and M. J. Kim, "Study on improvement of floor impact sound insulation performance in repairing floor layers of aged apartment" (in Korean), Trans. Korean Soc. Noise Vib. Eng. 29, 206-215 (2019).

10.5050/KSNVE.2019.29.2.206
8

D. H. Mun, G. G. Song, C. S. Lee, and H. G. Park, "Reduction of floor impact noise and impact force for pvc floor covering and floor mat" (in Korean), Trans. Korean Soc. Noise Vib. Eng. 24, 501-508 (2014).

10.5050/KSNVE.2014.24.7.501
9

J. O. Yeon, M. J. Kim, and S. C. Lee, "Evaluation methods of transmitted impact sound reduction by floor covering materials using real impact source and heavy-weight impact sound" (in Korean), J. KIAEBS, 12, 361-372 (2018).

10.12972/jkiaebs.20180031
10

Y. S. Chun, B. S. Lee, M.H. Jun, and D. H. Lee, "Evaluation of the performance of heavy-weight mortar-based buffer-type floor structure against floor impact sound" (in Korean), Proc. KCI Annual Spring Conf. 385-386 (2017).

11

H. S. Kim and J. S. Ha, "Reduction technology of noise between floors in floor structures using ultra-weight mortar" (in Korean), Proc. KCI Annual Autumn Conf. 525-526 (2022).

12

B. S. Koo, S. S. Hong, S. T. Kim, and M. J. Kim, "Analysis of heavy-weight impact sound insulation during curing period of floor finishing mortar in apartment building" (in Korean), J. KIAEBS, 18, 61-71 (2024).

13

W. H. Lee and C. H. Haan, "Characteristics of the floor impact sound by water to binder ratio of mortar" (in Korean), J. Acoust. Soc. Kr. 40, 671-677 (2021).

14

K. W. Kim, G. C. Jeong, and J. Y. Sohn, "Evaluation of the dynamic stiffness and heavy-weight floor impact sound reduction by composition of resilient materials" (in Korean), Trans. Korean Soc. Noise Vib. Eng. 18, 247-254 (2008).

10.5050/KSNVN.2008.18.2.247
15

J. K. Ryu, G. Jeong, J. Lee, and H. Kim, "Effect of thickness and composition of isolator for standardized floor structure on floor impact sound level" (in Korean), Proc. KSNVE, 382-383 (2013).

16

J. Lee, S. M. Lee, and C. H. Hann, "Investigation of the level difference of floor impact noises through the shape variation of EVA resilient materials with composite floor structure" (in Korean), J. Acoust. Soc. Kr. 43, 60-71 (2024).

17

B. S. Koo, B. K. Lee, and S. S. Hong, "Developed plaster type of floor insulation material for remodel apartment" (in Korean), Trans. Korean Soc. Noise Vib. Eng. 4, 267 (2018).

18

B. S. Koo, B. K. Lee, and S. S. Hong, "Analysis of reduction method of floor impact noise in remodeling apartment" (in Korean), Trans. Korean Soc. Noise Vib. Eng. 11, 176 (2020).

19

C. Y. Yun, J. H. Jeong, and M. J. Kim, "The effect of aerated concrete containing foam glass aggregate on the floor impact sound insulation" (in Korean), Trans. Korean Soc. Noise Vib. Eng. 23, 414-422 (2013).

10.5050/KSNVE.2013.23.5.414
20

HYUNDAI E&C, "Heavy mortar composition for flooring,″ Patent: 10-2447340, 2022.

21

DL E&C, Floor "Structure for reducing floor impact sound,″ Patent: 10-2023-0011071, 2023.

22

Korea Land and Housing Corporation, https://www. lh.or.kr/gallery.es?mid=a10502000000&bid=0003&list_no=11377&act=view, (Last viewed March 14, 2024).

23

Y. H. Kim, M. J. Kim, and G. G. Song, "Current conditions of floor impact noise reduction performances of the existing apartment buildings to be remodelled with design criteria" (in Korean), Proc. AIK Annual Spring Conf. 42, 359-362 (2022).

24

D. H. Hong, S. T. Kim, and M. J. Kim, "Reduction in floor impact sound and vibration acceleration levels of ceiling stucture" (in Korean), Trans. Korean Soc. Noise Vib. Eng. 34, 374-384 (2024).

10.5050/KSNVE.2024.34.4.374
25

H. S. Song, J. K. Ryu, Y. H. Kim, G. G. Song, and W. H. Lee, "Effect of an resonator absorber in the ceiling on floor impact sound level," Proc. Joint Conf. by KSNVE, ASK and KSME(DC), 338 (2017).

26

H. K. Shin and K. W. Kim, "Analysis effects of perforated gypsum board ceiling structure for floor impact sound reduction" (in Korean), Trans. Korean Soc. Noise Vib. Eng. 29, 511-517 (2019).

10.5050/KSNVE.2019.29.4.511
27

S. T. Kim, H. M. Cho, and M. J. Kim, "Effects of wall-to-wall supported ceilings on impact sound insulation for use in residential buildings," Buildings. 11, 587 (2021).

10.3390/buildings11120587
28

D. H. Mun, Y. K. Oh, G. C. Jeong, and H. G. Kim, "Floor impact noise level for concrete slab integrated with floor finishing layers" (in Korean), Trans. Korean Soc. Noise Vib. Eng. 26, 130-140 (2016).

10.5050/KSNVE.2016.26.2.130
29

KS F ISO 16283-2:2015, Acoustics - Field Measurement of Sound Insulation in Buildings and of Building Elements - Part 2: Impact Sound Insulation, 2017.

30

KS F ISO 717-2:2020, Acoustics - Rating of Sound Insulation in Buildings and of Building Elements - Part 2: Impact Sound Insulation, 2022.

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 : 43
  • No :6
  • Pages :724-736
  • Received Date : 2024-10-02
  • Revised Date : 2024-11-05
  • Accepted Date : 2024-11-09
  • DOI :https://doi.org/10.7776/ASK.2024.43.6.724
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