Stone & concreteBroadband absorber

Data source

PTB reference data

Physikalisch-Technische Bundesanstalt

Source: DNA-Tabelle 1968, b2.1-18

Value from the PTB table, not verified

Perforated glazed stoneware molded element

PTB reference data

Original description

Perforated glazed stoneware molded element

Material properties

Thickness: 100 mm to 120 mm
Dimensions: 240 × 240 mm
Hole size: conical from 18 mm
Surface: glazed
Application: wall

Measurement data

Sound absorption

ISO 354 – reverberation chamber· 2 variants

αw
0.70

Frequency values

αp per ISO 11654

f (Hz)1252505001k2k4k
αp0.401.001.000.800.600.75

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αw0.70
αw0.10

Dimensions: 240 x 240 mm

Terms of use
Measured values as a table (2 measurements)
Perforated glazed stoneware molded element: sound absorption coefficient αs per ISO 354 by frequency and test build-up
Build-upαw100 Hz125 Hz160 Hz200 Hz250 Hz315 Hz400 Hz500 Hz630 Hz800 Hz1000 Hz1250 Hz1600 Hz2000 Hz2500 Hz3150 Hz4000 Hz5000 Hz6300 Hz
Measurement 10.100.010.000.000.030.030.100.150.150.130.180.230.070.080.050.070.010.010.020.00
Measurement 20.700.220.340.680.851.151.181.101.181.100.980.820.620.580.600.620.650.750.820.70
Measured values as a table (2 measurements)

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