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KMID : 1024520020110030235
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Journal of the Environmental Sciences
2002 Volume.11 No. 3 p.235 ~ p.240
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A Study on the Characteristic of Sound Absorption of Flyash Blocks
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Byun Hong-Sik
Lee Tae-Gwan
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Abstract
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The blocks using flyash were prepared in this study. The characteristic of sound absorption of flyash block was investigated. It was revealed that the chemical additives and flyash played an important role to determine the characteristic of sound absorption. Chemical additive affects the capability of sound absorption while flyash affects the characteristic of sound absorption, i.e. high value of the sound absorption coefficient at the specific frequencies(1KHz and 2KHz). The flyash block showed higher sound absorption coefficient than that of the commercial concrete block having carpet on the surface. It was also shown that the sound absorption coefficient increases with increase of the content of flyash in the block. However, it was found that the 70wt% of flyash in the flyash block was the optimum content to obtain the highest sound absorption coefficient.
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KEYWORD
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Flyash block, sound absorption, chemical additives, recycle
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