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발포 폴리스티렌을 사용한 경량콘크리트 패널의 차열 특성
정지용(Jeong Ji-Yong),정갑철(Jeong Gab-Cheol),김진만(Kim Jin-Man) 대한건축학회 2007 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.27 No.1
To ensure the longevity and endurance of the buildings, Lightweight Panels have been applied a lot, as well as Rahmen and Flat Slab. Among the Lightweight Panels, the one with EPS(Expended Polystyrene), which reinforces weakness in bending strength that exists by attaching CRC(Cellulose Reinforced Cement board) and Mg(Magnesium board) on both sides of the panel, has widely been used. From the complex panel attached, with the CRC and Mg on both sides of the panel, you could expect enhanced fire resistance as well as an improvement in bending strength. Hereupon in this research, I have reviewed the heat-proofing performance of the types of lightweight partitioning boards with EPS and reinforcement. Accordingly I would like to suggest the basic data necessary for evaluating the possibility of using these architectural materials in residental buildings. In my research results, the boards fire resistance performance improved as each board became thicker. There is no significantly different change in the heat-proofing performance of the CRC (THK 3.2) regardless of the attachment, but it has demonstrated improved fire-resistance performance compared with the Mg. Although there is some difference in the fire resistance performance of each panel 50㎜ thick, it appears that this panel is unsatisfactory with the conditions of acceptable fire resistance structures required for its use in multi floor buildings.
완충재 구성방법에 따른 동탄성계수 및 중량바닥충격음 저감특성 평가
김경우(Kim, Kyoung-Woo),정갑철(Jeong, Gab-Cheol),손장열(Sohn, Jang-Yeul) 한국소음진동공학회 2008 한국소음진동공학회 논문집 Vol.18 No.2
Resilient materials are generally used for the floating floors to reduce the floor impact sound. Dynamic stiffness of resilient material, which has the most to do with the floor impact sound reduction. The resilient materials available in Korea include EPS(styrofoam), recycled urethane types, EVA(ethylene vinylacetate) foam rubber, foam PE(polyethylene). glass fiber & rock wool, recycled tire, foam polypropylene. compressed polyester, and other synthetic materials. In this study, we tested dynamic stiffness of resilient material and floor impact sound reduction characteristic to a lot of kinds of resilient materials. It was found that dynamic stiffness of multi-layered damping material could be estimated if know value of each layer that compose whole structure. And the test showed that the amount of the heavy-weight impact sound reduction appeared by being influenced from this dynamic stiffness of resilient material. The dynamic stiffness looked like between other resilient materials, a similar to the amount of the heavy-weight impact sound reduction was shown.
김경우(Kim, Kyoung-Woo),정갑철(Jeong, Gab-Cheol),손장열(Sohn, Jang-Yeul) 한국소음진동공학회 2008 한국소음진동공학회 논문집 Vol.18 No.8
Resilient materials are generally used for the floating floors to reduce the floor impact sound. Dynamic stiffness of resilient material have a close relation with the floor impact sound reduction. In this study, to examine the relationship between dynamic stiffness and lightweight impact sound level, the dynamic stiffness and floor impact sound level of 51 resilient materials were measured. The impact sound level of each of these resilient materials, whose dynamic stiffness was measured, was measured before and after installation, and the level difference (${\Delta}L$) was analyzed. The result of test showed that the dynamic stiffness of resilient materials decreased, the lightweight impact sound level also decreased, and there was a correlation between the dynamic stiffness and the lightweight impact sound, especially in the low frequency domain.