Mineral woolBroadband absorber
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: DNA-Tabelle 1968 a 7-2
Value from the PTB table, not verified
Aluminum-faced mineral fiber panel with bitumen bond
PTB reference data
Original description
Aluminum-faced mineral fiber panel with bitumen bond
Material properties
Thickness: 2 in
Wall distance: 9.1 in
Measurement data
Sound absorption
Reverberation chamber (ASTM C423 / ISO 354)
NRC
0.55
derived from ISO 354 lab data
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.60 | 0.70 | 0.75 | 0.50 | 0.30 | 0.20 |
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Value from the PTB table, not verified
NRC: 0.55 (derived from ISO 354 lab data)
Measured values as a table (1 measurement)
| Build-up | NRC | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 50 mm mineral-fibre panel · mineral-fibre panel 2.1kg/m^2, Alu-Folie with Bitumenschicht: 0.56 kg/m^2, Wellasbestzementplatten-Verkleidung 12.5 kg/m^2 · 230 mm · mineral-fibre panel montiert on Lattenkonstruktion with Air cavity 230 mm (seitlich umschlossen) vor Wand with Wellasbestzementplatten-Verkleidung, 12.5 kg/m^2. · sichtseitg alukaschiert (Bitumenbindung) | 0.55 | 0.48 | 0.67 | 0.73 | 0.63 | 0.68 | 0.80 | 0.73 | 0.75 | 0.58 | 0.51 | 0.40 | 0.35 | 0.30 | 0.27 | 0.20 | 0.18 | 0.15 | 0.08 |
Measured values as a table (1 measurement)
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