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연준오(Joon-oh Yeon),김경우(Kyoung-woo Kim),양관섭(Kwan-seop Yang) 한국소음진동공학회 2013 한국소음진동공학회 학술대회논문집 Vol.2013 No.4
Eco-friendly material applied to building would be one of the materials which is must developed for global environmental conservation and reduction of carbon dioxide. For development of eco-friendly material, a cellulose sound-absorbing material has been developed with waste paper through adjustment of various mix proportions. The developed cellulose sound-absorbing material has been tested for its acoustic properties such as acoustic absorptivity and dynamic elastic modulus. The absorptivity was evaluated by developing six samples and using impedance tube and reverberation chamber. As a result of the evaluation, 0.64(NRC) was secured in absorptivity and 4.7 MN/㎥ was indicated in dynamic elastic modulus. Also, for practical use of developed sound-absorbing material as inner heartwood in drywall, comparison test of sound reduction index was performed with existing glass wool sound-absorbing material and constructed drywall of gybsum board. The results have shown 55dB(Rw) of sound reduction index in glass-wool wall and 46dB(Rw) in cellulose.
연준오(Yeon, Joon-Oh),김경우(Kim, Kyoung-Woo),양관섭(Yang, Kwan-Seop) 한국소음진동공학회 2013 한국소음진동공학회 논문집 Vol.23 No.5
Eco-friendly material applied to building would be one of the materials which is must developed for global environmental conservation and reduction of carbon dioxide. For development of eco-friendly material, a cellulose absorber has been developed with waste paper through adjustment of various mix proportions. The developed cellulose absorber has been tested for its acoustic properties such as absorption coefficient and dynamic stiffness. The absorption coefficient was evaluated by developing six samples and using impedance tube and reverberation chamber. As a result of the evaluation, 0.64(NRC) was secured in absorption coefficient and 4.7 $MN/m^3$ was indicated in dynamic stiffness. Also, for practical use of developed absorbers as inner heartwood in drywall, comparison test of sound reduction index was performed with existing glass wool absorbers and constructed drywall of gypsum board. The results have shown 55 dB(Rw) of sound reduction index in glass-wool wall and 46 dB(Rw) in cellulose.
폐지를 활용한 흡음재의 환경성능 비교를 위한 기초 연구
이준희(Lee Joonhee),양관섭(Yang Kwan-seop),연준오(Yeon Joon-oh),김경우(Kim Kyung-woo) 대한건축학회 2011 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.31 No.2(계획계)
Widely used sound absorbers in the building such as rock wool and glass wool are not regarded as eco-friendly materials because they consume great amounts of energy and emit considerable greenhouse gases. Therefore, this paper aims to develop eco-friendly acoustic absorbers by using recycling paper. Nowadays, even though many eco-friendly absorbers are being developed, they don’t present any quantitative data to prove their environmental excellence. Thus, this paper presents comparison and analysis of the used energy amounts and emitted greenhouse gases of typical sound absorbers in the market to assess the developed absorber of this research.