Acoustic Study of Reinforced Coconut Fiber Wall Panels

Abstract

Studies in acoustics began with microscopic air pressure waves that are perceptible to the human ear. In modern acoustics, structural vibrations are often taken into consideration. This paper explores a sustainable approach to reducing noise pollution in buildings by incorporating coconut fiber into reinforced wall panels. The study examines the acoustic performance of these panels, which employ coconut fiber as a partial replacement for sand. Composite materials were made by blending coconut fiber with traditional construction materials, maintaining a cement-to-sand ratio of 1:2.75 and a water-cement ratio of 0.6. The study investigates panels with 0%, 3%, 6%, and 9% coconut fiber content to determine their mechanical qualities and sound absorption capacities. Different reinforcing techniques were also investigated to improve structural integrity while retaining acoustic efficiency. The process consists of material testing and acoustic measurements. The findings illustrated the viability of employing coconut fiber in building construction materials for noise reduction purposes, promote sustainable practices in the construction sector, and contribute to environmental preservation and resource efficiency. The method included ISO standard material testing and acoustic measurement, such as sound absorption coefficient and transmission loss evaluations. The study found that panels with 9% coconut fibre content produced improvement in sound absorption compared to 6%, 3% and 0% panels while maintaining appropriate mechanical strenght, indicating the potential of employing coconut fibre in construction material for noise reduction.