HOU Laiguang, ZENG Lingke

(Material Ins titute,South China Univers ity of Technology ,Guangzhou 510640)

Abstract: With the developing of society, the more sound absorbing material was needed and the more advanced material was also needed.This material mus t be changed from the s inglenes s to the multi- purpose. In this paper it took the ceramic g1obule,cement, perlitc and fly ash as the main material, ves icant and the waterproof as the additive produced a kind of porous material without fiber by the method of common concrete molding. In the experimentation it analyzed the factors such as density. thicknes s . the pore that affect sound absorption capability of this material.

Keywords:ceramic flotsam，noise absorbent material of metro，ceramic granule，tes ting of capability