| 요약2 |
The aim of this study is to search for a diversity of environmentally sustainable dry wall systems which might be usable to the walls of non load bearing wall structural system apartments. Four different dry wall systems using three different cement panels were composed and tested to apply for unit to unit walls, having a strict sound insulation performance guideline by Korean Law. A series of tests show that they have Rw+C values from 49 to 54. They are grade 2 and grade 3 in the aprartment housing performance frade indication scheme of Korea, Three of them are having adequate performance enforced by Korean Law. They have quite different insulation characteristics especially in the mid frequency range, from 500hz to 2,000Hz, according to the sectional shape of the panels and the composition of the systems. As for the sound insulaion characteristics of gypsum board system and composite panel system, they have quite distinguishable features. Though they are all usable to in-unit room to room walls, gypsum board system has a good insulation performance while composite panel system is goon in mid and high frequency bands. |