Use of Locally Available Agro Waste Materials for Development of Sound Insulation Panels
Any unpleasant sound is referred to as noise. Incompatible with rest, work, play, or sleep, it is unwanted in this sense. Noise does not linger in the environment for a very long time, in contrast to other types of pollution like air, water, and toxic compounds. When it comes to causing disturbance and hearing loss, its effects are instantaneous, but they build over time. The ability of a building to block out sound is a crucial design factor. The majority of synthetic materials used today to make noise insulators, such as petroleum-based gels or synthetic rubber, are used in their production. Acoustic plaster, glass, or mineral wool tiles, etc. are materials that are typically utilized for sound insulation. In addition to being costly, these materials also harm the environment in a substantial way. This work deals with the efforts to fabricate low-cost sound absorbing panels from bagasse and rice straw and assess their performance for sound insulation application. Sound insulation panels were prepared with rice straw and bagasse in the ratios 1:1 and 1:2. The sound absorption coefficient was measured using the impedance tube test. Acoustic behavior was determined using reverberation room test. Physical properties of panels were determined using compressive strength test, moisture absorption test and thickness swelling test. The findings show that the samples of ratio 1:1 have better sound absorbing performance and physical properties. This study shows that the acoustic properties and physical properties of panels made with rice straw and bagasse in the ratio 1:1 can be an environment friendly and economical method of manufacturing sound insulation panels.
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