Research and testing of the noise-absorbing efficiency of different cardboard samples

Abstract

The study analyses the sound absorption efficiency of cardboard waste samples in order to clarify their potential as alternative reusable sound-absorbing materials. The studies examined panels of various densities and thicknesses made from recycled cardboard waste. The results showed that recycled cardboard has sound absorption potential, and the efficiency of prototypes reaches up to 0.41. The study also emphasises the importance of cardboard as a sustainable and easily recyclable material, suggesting its application for the production of cheaper acoustic panels. These solutions could be useful for socially sensitive groups and environmentally oriented construction innovations. It was found that the sound absorption coefficient in the medium frequencies (2000 Hz to 3150 Hz) reached up to 0.28, and in the high frequencies (3150–5000 Hz) – up to 0.41. This study aims to determine the sound absorption properties of cardboard and adhesive composite material and to propose alternative, easily manufactured sound-absorbing panels.