Preprint Article Version 1 This version is not peer-reviewed

Acoustic Properties of Composite Synthesized from Activated Zeolite and Fibre

Version 1 : Received: 10 September 2018 / Approved: 10 September 2018 / Online: 10 September 2018 (09:32:23 CEST)

How to cite: Hidjan, H.; Sutanto, S..; Rohadi, N.. Acoustic Properties of Composite Synthesized from Activated Zeolite and Fibre. Preprints 2018, 2018090160 (doi: 10.20944/preprints201809.0160.v1). Hidjan, H.; Sutanto, S..; Rohadi, N.. Acoustic Properties of Composite Synthesized from Activated Zeolite and Fibre. Preprints 2018, 2018090160 (doi: 10.20944/preprints201809.0160.v1).

Abstract

The unique porous crystal structure of zeolite offers various important utilizations, it is one of the considerations in selecting zeolite at this study as component of composite for restraining noise. It so happens, previous experiments show that banana stem has porous structure, fibrous, high flexibility and can be applied as material for many various products including as component of acoustic material. The combination of both is alleged that it has capability in absorbing noise. This paper presents an investigation on the composite that it was synthesized of Activated Zeolite and Banana Stem Fibre in various weight for determining its sound absorption coefficient alpha (a). Activating natural zeolite was conducted by using 6M HCl in order for enlarging zeolite pores. The sound absorption coefficient was measured in the frequency range between 125 Hz up to 6000 Hz. The results show that the different weight of banana stem fibre as component of the synthesized composite affects the value of alpha and shifts the frequency area.

Subject Areas

Sound Absorption Coefficient; Noise; Activated Zeolite; Banana Stem Fibre; Acoustical material

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