Acoustic absorption of hemp-lime construction

作者：Kinnane Oliver; Reilly Aidan^*; Grimes John; Pavia Sara; Walker Rosanne

来源：Construction and Building Materials, 2016, 122: 674-682.

DOI：10.1016/j.conbuildmat.2016.06.106

• Acoustic sound absorption
• Hemp lime pozzolan concrete
• Porous materials
• Sustainability

Hemp-lime concrete is a sustainable alternative to standard wall construction materials. It boasts excellent hygrothermal properties in part deriving from its porous structure. This paper investigates the acoustic properties of hemp-lime concrete, using binders developed from hydrated lime and pozzolans as well as hydraulic and cementicious binders. To assess the acoustic absorption of hemp-lime walls, as they are commonly finished in practical construction, wall sections are rendered and the resulting impact on absorption is evaluated. Hemp-concretes with lime-pozzolan binders display superior acoustic properties relative to more hydraulic binders. These are diminished when rendered, as the open surface porosity is affected, however hemp-lime construction offers the potential to meet standard and guideline targets for spaces requiring acoustic treatment.

• 出版日期2016-9-30