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)1252505001k2k4k
αp0.450.900.900.700.650.60

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CompareValue
200 mmαw0.70
400 mmαw0.68

Weight / density: Mineralfasermatte: 1.05Kg/cm^2,

Dimensions: 1500 x 1250

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