BUILDING CONSTRUCTION PANELS

摘要

The invention relates to the suppression of acoustic transmission through building construction panels such as rectangular plasterboard panels. A layer of elastomer- modified bituminous material is coupled to part of the surface area of one of the panel faces so as to coincide with its regions of maximum displacement during resonance at its fundamental frequency. The elastomer-modified bituminous material acts as an unconstrained damping layer to reduce the displacement, and hence the noise, produced by the panel. In an alternative embodiment, the layer of elastomer-modified bituminous material is sandwiched between two superimposed construction panels. The invention provides significant improvements in terms of noise propagation whilst using fewer materials.