WoodHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: DNA 1968, Tabelle a 3.1-4
Cement-bonded wood wool lightweight board, 50 mm thick, 30 mm air cavity
PTB reference data
Original description
Cement-bonded wood wool lightweight board, 50 mm thick, 30 mm air cavity
Material properties
Thickness: 50 mm
Wall distance: 30 mm
Dimensions: 500 × 2000 mm
Surface weight: 19.5 kg/m²
Flow resistance: 24 kPa·s/m²
Mounting: Air cavity coffering 500 mm x 500 mm (batten construction)
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.46
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.10 | 0.25 | 0.55 | 0.55 | 0.60 | 0.70 |
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Method (354): Measured