Vibro-acoustic behaviour of polymer-based composite materials produced with rice husk and recycled rubber granules

摘要: Abstract This research concerns the study of composite boards made from polymer-based materials that include rice husk and recycled rubber granules, to see if they can mitigate vibrations improve impact sound insulation floor solutions in buildings. The influence mix, mass density board thickness on overall performance was studied experimentally. First, composites were under static compressive loading. Then, behaviour dynamic loads evaluated through transmissibility tests for frequencies ranging 20 200 Hz with five different loading scenarios, which transfer stiffness curves determined. ability proposed floors also assessed experimentally, adjacent vertical acoustic chambers. tested as top layer system part a floating floor. For latter, thin slab built above specimen. results indicate produced granules help vibration building solutions. Thicker samples whose content higher apparent lower showed isolation capacity wide range frequencies. Moreover, it found able Composite perform better coatings.