| 요약2 |
The purpose of this study is to analyze the optimal design criteria for the maximum sound insulation performance of multi layer dry wall systems which use soundproof sheets made of natural materials such as stone dust. 18 different systems are designed and tested to investigate the impact of soundproof sheet, air gap, thickness of the panels, the stud and runner, and the total thickness of the system on sound insulation performance. As results, most of the systems have adequate performances in the accreditation scheme of Korean laws and regulations. Regardless of the position and the thickness, soundproof sheets affect positively on sound insulation performance. Better performances are also observed in all frequency bands by increasing the air gap, and especially in low frequency bands below 160Hz and in around 2,000Hz bands by the isolation of runners and studs. |