StoneHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Herstellerangabe unter http://asonad.de, März 2002
Soundblox Type E2 hollow concrete block with Helmholtz resonators
Helmholtz resonator – SOUNDBLOX Type E2
PTB reference data
Original description
Soundblox Type E2 hollow concrete block with Helmholtz resonators
Material properties
Manufacturer: Asona Deutschland GmbH
Up to fire class: F-180
Application: fair-faced concrete masonry
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.58
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.10 | 0.35 | 1.00 | 0.75 | 0.60 | 0.65 |
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Method (354): Measured