Asian Science Citation Index is committed to provide an authoritative, trusted and significant information by the coverage of the most important and influential journals to meet the needs of the global scientific community.  
ASCI Database
308-Lasani Town,
Sargodha Road,
Faisalabad, Pakistan
Fax: +92-41-8815544
Contact Via Web
Suggest a Journal
Journal of Engineering and Applied Sciences
Year: 2016  |  Volume: 11  |  Issue: 6  |  Page No.: 1278 - 1285

Effect of Adding Perlite and Carbon Nanotubes on Noise Absorption of Plaster Panels

Majid Nouri Kamari and Amir Afkar    

Abstract: With the development of sound pollutants, modern life is full of unwanted noises which are generated inside or outside of buildings and can be annoying for residents and these problems are always felt more with increased urbanization and the use of thin stone blades separators and transmission of noise from one room to another. Thus, the use of acoustic materials to counter and mitigate noise in the building is necessary. In the meantime, plaster as one of the most common building materials can be used in combination with perlite and carbon nanotubes as a proper adsorbent of sound in buildings. Accordingly, the objective of this study is to assess the degree of sound absorption by the plaster, plaster-perlite, plaster-carbon nanotubes, plaster-perlite-carbon nanotubes using conversion function in impedance tube in accordance with ISO standard number 10534-2. Empirical studies and experimental results showed that Plaster with a thickness of 12 mm can singly absorb up to 36% of noises. The results also suggest that adding perlite and carbon nanotubes results in improved sound absorption capability of plaster panel in frequency range of 100-6300 Hz, in a way that up to 65% sound absorption was observed by combining plaster perlite and up to 75% sound absorption was observed by combining. Finally, the maximum sound absorption in this study was obtained to be about 84% with simultaneous use of combination of carbon nanotubes, perlite and plaster.

Fulltext    |   Related Articles   |   Back
   
 
 
 
  Related Articles

 
 
 
 
 
 
 
Copyright   |   Desclaimer   |    Privacy Policy   |   Browsers   |   Accessibility