Smooth unpainted concrete
NRC 0.00
PTB reference data
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Reference surfaceLow absorption
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Odeon (Index 101)
Value from the PTB table, not verified
Original description
Smooth unpainted concrete
Material properties
No further information available.
Measurement data
Sound absorption
Reverberation chamber (ASTM C423 / ISO 354)
NRC
0.00
approximated from ISO 354 octave-band data
Frequency values
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Value from the PTB table, not verified
NRC: 0.00 (approximated from ISO 354 octave-band data)
Measured values as a table (1 measurement)
| Build-up | NRC | 63 Hz | 125 Hz | 250 Hz | 500 Hz | 1000 Hz | 2000 Hz | 4000 Hz | 8000 Hz |
|---|---|---|---|---|---|---|---|---|---|
| Measurement 1 | 0.00 | 0.01 | 0.01 | 0.01 | 0.02 | 0.02 | 0.02 | 0.05 | 0.05 |
Measured values as a table (1 measurement)
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