GypsumHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: DNA-Tabelle 1968 b2.1-4
Value from the PTB table, not verified
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
0.75
Frequency values
αp per ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.60 | 0.85 | 0.75 | 0.80 | 0.70 | 0.60 |
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| Compare | Value | |
|---|---|---|
| 400 mm | αw0.75 | |
| 200 mm | αw0.70 |
Weight / density: Mineralfasermatte: 1.05Kg/cm^2,
Dimensions: 1500 x 1250
Measured values as a table (2 measurements)
| Build-up | αw | 100 Hz | 125 Hz | 160 Hz | 200 Hz | 250 Hz | 315 Hz | 400 Hz | 500 Hz | 630 Hz | 800 Hz | 1000 Hz | 1250 Hz | 1600 Hz | 2000 Hz | 2500 Hz | 3150 Hz | 4000 Hz | 5000 Hz | 6300 Hz |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 9,5 mm · Mineralfasermatte: 1.05Kg/cm^2, · 200 mm · Schichtaufbau: 9,5 mm-Gipskarton-Lochplatte with rückseitigem Faservlies, 30 mm-Mineralfasermatte, Drahtgitter, Abstand hintere Gipsplattenseite/Wand: 200 mm. Unterkonstruktion: Lattung on Abstandklötzen, Prüffläche seitlich geschlossen · Lochflächenanteil 19.6 %, Lochdurchmesser 15 mm, Lochraster 30 x 30 mm, | 0.70 | 0.32 | 0.39 | 0.65 | 0.87 | 0.94 | 0.88 | 0.93 | 0.92 | 0.82 | 0.68 | 0.68 | 0.75 | 0.70 | 0.69 | 0.62 | 0.60 | 0.58 | 0.58 | 0.60 |
| 9,5 mm · Mineralfasermatte: 1.05Kg/cm^2, · 400 mm · Schichtaufbau: 9,5 mm-Gipskarton-Lochplatte with rückseitigem Faservlies, 30 mm-Mineralfasermatte, Drahtgitter, Abstand hintere Gipsplattenseite/Wand: 400 mm. Unterkonstruktion: Lattung on Abstandklötzen, Prüffläche seitlich geschlossen · Lochflächenanteil 19.6 %, Lochdurchmesser 15 mm, Lochraster 30 x 30 mm, | 0.75 | 0.65 | 0.30 | 0.88 | 0.80 | 0.96 | 0.82 | 0.65 | 0.68 | 0.85 | 0.82 | 0.79 | 0.75 | 0.73 | 0.72 | 0.68 | 0.63 | 0.63 | 0.60 | 0.63 |
Measured values as a table (2 measurements)
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