| 하수슬러지 슬래그를 이용한 다공성 세라믹스 흡음재료 제조 |
| 신대용, 한상목1 |
강원대학교 석재복합 신소재제품 연구센터
1강원대학교 신소재공학과 |
| Preparation of Porous Ceramics Sound Absorbent Material Using Sewage Sludge Slag |
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| ABSTRACT |
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The effects of content and particle size of sewage sludge slag on the sound absorption was investigated and the physical$.$mechanical properties of porous ceramics for sound absorbent material was studied. The physical$.$mechanical properties of specimens have depended on sintering temperature and slag content without particle size effect of slag. As water glass content increase and particle size of slag decrease at the same slag content, physical$.$mechanical properties of them have been improved. The bulk density and compressive strength of specimens with the batch composition of 77∼89 wt% of slag content and particles with 1∼3 mm, and sintered at 1,050$^{circ}C$ for 2 h were 1.48∼1.71 and 86∼163 kgf/$textrm{cm}^2$, respectively. The specimens with 1∼3 mm and <1 mm of particles size showed good sound absorption property at low frequency and high frequency region. With increasing thickness of specimens, sound absorption properties at low frequency region were increased. |
| Key words:
Porous ceramics sound absorbent material, Sewage sludge slag, Physical |
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