Loose cork granulates as possible new core element in noise barriers
- 55 Downloads
This paper is a first study to evaluate the possible use of loose cork granulates as core element in noise barriers. To obtain the acoustical performance of loose cork granulates inside a noise screen, a small prototype of a noise absorbing barrier was designed and compared to commercial rock wool. The results obtained showed that these kinds of porous absorber, specially sorted and prepared, could be good sound absorbers with a certain broadband absorption spectrum.
Compliance with ethical standards
Conflict of interest
On behalf of all authors, the corresponding author states that there is no conflict of interest.
- EN 1793-1 (2017) Road traffic noise reduction devices. Test method for determining the acoustic performance. Part 1: Intrinsic characteristics of sound absorption under diffuse sound field conditions. European Committee for Standardisation. BrusselsGoogle Scholar
- ISO 10534-2 (1998) Acoustics-determination of sound absorption coefficient and impedance in impedance tubes. Part 2: transfer function-method. International Organization for Standardization, GenevaGoogle Scholar
- Maderuelo-Sanz R, Nadal-Gisbert AV, Crespo-Amorós JE, Barrigón Morillas JM, Parres-García F, Juliá Sanchís E (2016) Influence of the microstructure in the acoustical performance of consolidated lightweight granular materials. Acoust Aust 44:149–157. https://doi.org/10.1007/s40857-016-0048-5 CrossRefGoogle Scholar