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http://dx.doi.org/10.4191/KCERS.2003.40.3.273

Preparation of Porous Ceramics Sound Absorbent Material Using Sewage Sludge Slag  

신대용 (강원대학교 석재복합 신소재제품 연구센터)
한상목 (강원대학교 신소재공학과)
Publication Information
Abstract
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.
Keywords
Porous ceramics sound absorbent material; Sewage sludge slag; Physical·Mechanical property; Sound absorption property;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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