GypsumBroadband absorber
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Manufacturer data online at www.rigips.de, as of April 01
Value from the PTB table, not verified
Rigiton 12-20-35 perforated gypsum board with 50 mm mineral wool
Rigiton 12-20-35
PTB reference data
Original description
Rigiton 12-20-35 perforated gypsum board with 50 mm mineral wool
Material properties
Manufacturer: Rigips GmbH
Wall distance: 7.9 in
Backing: 2 in mineral wool
Measurement data
Sound absorption
Reverberation chamber (ASTM C423 / ISO 354)
NRC
0.50
derived from ISO 354 lab data
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.55 | 0.75 | 0.60 | 0.45 | 0.25 | 0.15 |
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Value from the PTB table, not verified
NRC: 0.50 (derived from ISO 354 lab data)
Measured values as a table (1 measurement)
| Build-up | NRC | 125 Hz | 250 Hz | 500 Hz | 1000 Hz | 2000 Hz | 4000 Hz |
|---|---|---|---|---|---|---|---|
| 200 · Lochung round, unregelmäßig verteilt, Durchmesser 12 mm, 20 mm and 35 mm, Lochflächenanteil ca. 5,2% | 0.50 | 0.54 | 0.74 | 0.60 | 0.46 | 0.24 | 0.15 |
Measured values as a table (1 measurement)
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