Development and Characterization of Mechanical and Acoustic Properties of a Corn Husk/Fly Ash Hybrid Composite Board

Development and Characterization of Mechanical and Acoustic Properties of a Corn Husk/Fly Ash Hybrid Composite Board
  IJETT-book-cover           
  
© 2024 by IJETT Journal
Volume-72 Issue-9
Year of Publication : 2024
Author : N. Z. Nkomo, A. A. Alugongo
DOI : 10.14445/22315381/IJETT-V72I9P135

How to Cite?
N. Z. Nkomo, A. A. Alugongo, "Development and Characterization of Mechanical and Acoustic Properties of a Corn Husk/Fly Ash Hybrid Composite Board," International Journal of Engineering Trends and Technology, vol. 72, no. 9, pp. 384-389, 2024. Crossref, https://doi.org/10.14445/22315381/IJETT-V72I9P135

Abstract
This study focuses on the development of an acoustic hybrid composite that will be used as a sound absorber using corn husks obtained from maize, fly ash from coal and polyester resin. Corn husks were pre-treated using 5% hydroxide before being used in the fabrication of the composite, and fly ash was only moistened using distilled water. The fabrication of the composite was carried out using the hand-laying method. Three different samples were fabricated, with sample A having 30% corn husks, 20% fly ash, and 50% polyester resin, sample B with an equal ratio of corn husk and fly ash of 25% and polyester being 50%. Sample C has 20% corn husks, 30% fly ash, and 50% polyester resins. These percentages were in terms of mass fractions. Different tests were carried out, including sound absorption test, compression strength test, flexural strength test and water absorption test. Both the fabricated samples showed good sound absorbance, with good results obtained from the one with a high mass fraction of corn husk.

Keywords
Composite, Corn husk, Fly ash, Mechanical strength, Flexural Strength.

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