StoneHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: DNA-Tabelle 1968, b3-4
Solid brick masonry with open butt joints
PTB reference data
Original description
Solid brick masonry with open butt joints
Material properties
Thickness: 100 mm
Wall distance: 30 mm
Dimensions: 207 x 100 x 55 mm
Perforation: 7 %
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.33
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.15 | 0.35 | 0.30 | 0.30 | 0.45 | 0.45 |
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Method (354): Measured