Study to Determine the Sound Absorption Coefficient for a New Masonry Paint Under Development.
João Gabriel Oliveira de Miranda1; Marlipe Garcia Fagundes1; Marcus Antonio Viana Duarte1
1 UFU
Resumo
The acoustic attenuation capability from a material, it´s indicated by the sound absorption coefficient, thus, this magnitude is of utmost importance to determinate which coating materials should be utilized in acoustic project. In this regard, it is possible to evaluate the performance of materials with acoustic features, enhance the attenuation at specific frequency bands, or assist in the development of new technologies in absorption, it becomes necessary to use techniques to determine the coefficient of sound absorption, via transfer function, according to standard ISO10534-2. The objective of this paper is to apply the specified standard and determine the sound absorption in masonry walls coated with a special paint, and the paint used is a new material under development with acoustic properties in noise reduction. The results are compared with other forms of coating normally used in Brazilian construction that are commonly commercialized.
Palavras-chave: Noise; absorption coefficient; impedance tube; coated materials; noise absorption materials