Research on the sound absorption properties of porous structure and perforated structure in cement-based sound absorption materials
QUAN Ming
LI Yuxiang
Abstract：Based on the porous structure of cement -based sound absorption material, the perforated structure of evenly distributed cylinder was designed in one side. The sound-absorbing principles of the composite structure were discussed. Using expanded perlite particles mixed with cement slurry,the cement-based sound absorption materials added with fiber or(and) foaming agent were prepared by compression moulding. The effect of porous structure and perforated structure on the sound absorption properties was studied. The results indicated that,compared with porous structure only with foaming or fiber,the sound absorption properties of porous structure with foaming and fiber together in cement -based sound absorption materials were better. When perforated,the sound absorption properties of cement-based sound absorption materials having different porous structures were all improved greatly.
Keywords：cement-basedsound absorption materialporous structureperforated structuresound absorption properties
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 67-70,146 )