Name: Silicate-treated wood fiber, organic binder
Creator: Physikalisch-Technische Bundesanstalt (PTB)

Silicate-treated wood fiber, organic binder – PTB – Physikalisch-Technische Bundesanstalt | Acoustic Index

ISO 354 – reverberation chamber· 12 variants

αw

0.89

αp per ISO 11654

125 Hz

0.40

250 Hz

0.90

500 Hz

1.20

1000 Hz

0.85

2000 Hz

1.10

4000 Hz

0.95

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		Value
2 inch	covered with perforated facing, airspace 40 mm	αw0.89
1 1/2 inch	covered with perforated facing, airspace 40 mm	αw0.85
2 inch	covered with perforated facing, airspace 20 mm	αw0.82
1 inch	covered with perforated facing, airspace 40 mm	αw0.79
1 1/2 inch	covered with perforated facing, airspace 20 mm	αw0.78
1 inch	covered with perforated facing, airspace 20 mm	αw0.74
2 inch	nailed to 20 mm wood furring strips	αw0.63
2 inch	0	αw0.59
1 1/2 inch	nailed to 20 mm wood furring strips	αw0.58
1 1/2 inch	0	αw0.53
1 inch	nailed to 20 mm wood furring strips	αw0.46
1 inch	0	αw0.39

Weight / density: 3.3 lb/ft²

Dimensions: 24 x 96, 24 x 48 inches

Silicate-treated wood fiber, organic binder

Material properties