Application of rice husk in the development of new composite boards

The results are very interesting, in particular: the thermal conductivity, at 10 °C, varies from λ10 = 60.0 mW/(m.K) to λ10 = 74.3 mW/(m.K); the weighted reduction of the impact sound pressure level, ΔLw, ranges from 20 dB to 27 dB; the noise reduction coefficient (NRC) ranges from 0.15 to 0.45, with maximum sound absorption coefficient of 0.96 for composite B1. These results suggest that optimized construction solutions based on these composite materials could improve the thermal and acoustic performance of buildings.