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A Study on the Sound Absorption Properties of Cellular Concrete with Continuous voids
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 Title & Authors
A Study on the Sound Absorption Properties of Cellular Concrete with Continuous voids
Lee, Seung-Han; Jung, Yong-Wook; Park, Jung-Jun;
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 Abstract
This study was performed to manufacture a rigid sound absorbing material by increasing the continuous void ratio of cellular concrete, thereby achieving an increase in sound absorption ratio and an enhancement in strength of the cellular concrete. By the experiments, it was determined that an increase in sound absorption ratio is achieved by increasing the added amount of air voids, thereby increasing the continuous void ratio. When the material had a thickness of 5 cm, a satisfactory average sound absorption ratio of 70% was obtained at a continuous void ratio of 40% or more. An increase in the thickness of the sound absorbing material resulted in an increase in sound absorption ratio in a super bass range. The specific gravity of cellular concrete meeting an average sound absorption ratio of 70% was 0.4 at a material thickness of 5 cm, and 0.6 or less at a material thickness of 7 cm. The compressive strength of the cellular concrete having a specific gravity of 0.4 meeting an average sound absorption ratio of 70% or more was 1.37 Mpa at a cement fineness of 3,000. This compressive strength was increased to 3.34 MPa at a cement fineness of 8,000. Accordingly, it was determined that the compressive strength of cellular concrete having continuous voids increases with a higher cement fineness.
 Keywords
cellular concrete;continuous void ratio;sound absorption ratio;cement fineness;
 Language
Korean
 Cited by
1.
경량기포콘크리트의 연속공극 형성에 미치는 기포제의 영향,이승한;

한국콘크리트학회논문집, 2002. vol.14. 5, pp.742-749 crossref(new window)
2.
연속공극을 갖는 기포콘크리트의 흡음특성에 관한 연구,이승한;정용욱;박정준;

한국콘크리트학회논문집, 2003. vol.15. 4, pp.566-573 crossref(new window)
3.
배합요인에 따른 바텀애시 미분말을 사용한 흡음형 기포콘크리트의 공학적 특성,김진만;강철;

한국건축시공학회지, 2009. vol.9. 5, pp.63-70 crossref(new window)
1.
Engineering Properties of Sound Absorbing Foamed Concrete Using Bottom Ash Depending on Mix Factors, Journal of the Korea Institute of Building Construction, 2009, 9, 5, 63  crossref(new windwow)
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