Table 1 Fillers and their properties.

From: A comparative study on acoustical properties using waste recycled porous materials for environmental sustainability

Fillers

Particle size (µm)

Density (g/cm3)

Curing Temperature (°C)

Gypsum

6.2 ± 1.5

2.3

150

Vermiculite

7.3 ± 1.2

2.4–2.7

150

RPU powder

254 ± 18

1.08

150

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