GypsumHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: DNA-Tabelle 1968 b2.1-4
Perforated gypsum board with mineral fiber mat
PTB reference data
Original description
Perforated gypsum board with mineral fiber mat
Material properties
Thickness: 9.5 mm
Wall distance: 200 mm, 400 mm
Surface weight: 1.05 kg/cm²
Perforation: 19.6%
Hole size: 15 mm
Backing: non-woven, 30 mm mineral fiber mat
Flow resistance: non-woven: 12 Rayl, mineral fiber mat: 7.5 Rayl
Measurement data
Sound absorption
ISO 354 – reverberation chamber· 2 variants
αw
0.70
Frequency values
αp per ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.45 | 0.90 | 0.90 | 0.70 | 0.65 | 0.60 |
Create a permanent free account — Access frequency bands, variants and export.
Free. No password required.
| Compare | Value | |
|---|---|---|
| 200 mm | αw0.70 | |
| 400 mm | αw0.68 |
Weight / density: Mineralfasermatte: 1.05Kg/cm^2,
Dimensions: 1500 x 1250