바닥충격음 저감을 위한 통기성 천장공법 개발

Abstract

This study investigated the increase of floor impact sound caused by ceiling air space in test building. Firstly, the changein floor impact sound with and without ceiling air-space was measured. Noise reduction effect of perforated ceiling systems andglass wool at ceiling area was also investigated. It was expected that perforated ceiling systems could reduce air-spring effectin ceiling space. As a result, ceiling air space caused increasement of floor heavy-weight impact sound about 2~4 dB. On theother hands, perforated ceiling with sound-absorbing materials system could reduced heavy-weight floor impact sound by 3 dB.