Acoustical properties of materials made of vegetable particles with several scales of porosity

被引：177

作者：

Gle, P. ^{[1
]}

Gourdon, E. ^{[1
]}

Arnaud, L. ^{[1
]}

机构：

[1] Ecole Natl Travaux Publ Etat, CNRS, DGCB, FRE 3237, F-69518 Vaulx En Velin, France

来源：

APPLIED ACOUSTICS | 2011年 / 72卷 / 05期

关键词：

Acoustics; Sound absorption; Multi-scale porosity; Vegetable particles; Hemp concrete; Hemp shiv; SATURATED POROUS-MEDIA; DYNAMIC PERMEABILITY; SOUND-ABSORPTION; FREQUENCY RANGE; GRANULAR MEDIA; ELASTIC WAVES; SHAPE FACTORS; PROPAGATION; AIR; TORTUOSITY;

D O I：

10.1016/j.apacoust.2010.11.003

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

This article is devoted to the acoustical properties of hemp concrete, a "green" building material. In the study, hemp concretes made of different binders and different kinds of particles were characterised, and then modeled using equivalent-fluid models. Further, it is shown that the sound absorption of these materials can be controlled and significantly enhanced by means of suitable constituents and fabrication processes. Finally, good results are provided by the models. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：249 / 259

页数：11

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