StoneHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: DNA-Tabelle 1968, b3-6
Perforated brick, glazed, with mineral fiber backing
PTB reference data
Original description
Perforated brick, glazed, with mineral fiber backing
Material properties
Thickness: 50 mm
Wall distance: 25 mm
Perforation: 17%
Backing: 10 mm mineral fiber
Surface: glazed
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.34
Frequency values
αp nach ISO 11654
| f (Hz) | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|
| αp | 0.15 | 0.55 | 0.45 | 0.35 | 0.25 |
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Method (354): Measured