StoneHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Herstellerangabe im Internet unter www.bausteine-briest.de, 01.02.2001
Liakustik Liapor sound absorber blocks for track construction
Liakustik, Liapor 1-4
PTB reference data
Original description
Liakustik Liapor sound absorber blocks for track construction
Material properties
Manufacturer: Bausteine Briest GmbH
Wall distance: 30 mm
Application: track construction, between sleepers
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.78
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.65 | 0.90 | 0.70 | 0.80 | 0.85 | 0.85 |
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Method (354): Measured