StoneHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Odeon (Index 1002)
55 mm perforated bricks on edge, 78 holes per brick, 11% perforation, no cavity
PTB reference data
Original description
55 mm perforated bricks on edge, 78 holes per brick, 11% perforation, no cavity
Material properties
Thickness: 55 mm
Wall distance: 0 mm
Perforation: 11%
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.37
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.00 | 0.05 | 0.10 | 0.25 | 0.15 | 0.15 |
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Method (354): Measured