Journal of Northeastern University(Natural Science) ›› 2022, Vol. 43 ›› Issue (10): 1477-1483.DOI: 10.12068/j.issn.1005-3026.2022.10.015

• Resources & Civil Engineering • Previous Articles     Next Articles

Experimental Study on Improvement Sound Insulation Performance of Existing GRC Perforated Slats Light Partition Wall

ZHANG Jiu-hong1, ZHOU Wen-tao1, LI Feng2, MA Ming-xiao3   

  1. 1. School of Jangho Architecture, Northeastern University, Shenyang 110169, China; 2. China Institute of Building Standard Design & Research, Beijing 100048, China; 3. School of Automation Science and Electrical Engineering, Beihang University, Beijing 100191, China.
  • Revised:2021-12-17 Accepted:2021-12-17 Published:2022-11-07
  • Contact: ZHANG Jiu-hong
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Abstract: The sound insulation defects of single-layer GRC (glass-fiber reinforced cement) perforated slats light partition wall commonly used in existing buildings are discussed. By comparing and analyzing the sound insulation characteristics of GRC perforated batten double wall and GRC perforated batten partition wall with composite sound insulation components, the advantages of composite sound insulation structure in the reconstruction of existing buildings are found. Firstly, the physical properties of acoustic materials and the characteristics of the composite structure with air interlayer in the composite sound insulation structure are studied, and the composite sound insulation structure is theoretically analyzed and experimentally tested. By optimizing the composite sound insulation structure, the design scheme of improving the sound insulation performance of GRC perforated slatted light partition wall with two layers and three layers of calcium silicate board composite structure is put forward. The results show that the modified GRC perforated partition wall can effectively improve the problem of sound insulation reduction caused by wall vibration, and improve the sound insulation performance of the wall in all frequency bands.

Key words: existing building; GRC (glass-fiber reinforced cement) perforated slats light partition wall; sound insulation; composite sound insulation structure

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