Acoustic analysis of cement composites with lignocellulosic residues
Laen...
Kuupäev
2021
Kättesaadav alates
Autorid
Ferraz, P.F.P.
Abreu, D.H.S.
Huallpa, B.N.
Santana, L.S.
Cecchin, D.
Rabelo, G.F.
Rossi, G.
Barbari, M.
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
Estonian University of Life Sciences
Abstrakt
The concept of environmental sustainability has been seeking a way to develop projects
that reduce the impacts provided by agricultural development and the excessive consumption of
natural resources. However, there is still little knowledge about the acoustic insulation/absorption
behaviour of lignocellulosic materials. Hence, this study aimed to evaluate the acoustic properties
of five cement panels reinforced with the following lignocellulosic materials: eucalyptus,
sugarcane bagasse, coconut shell, coffee husk, and banana pseudostem, which ones have as a
reference a commercial plaster used as sealing in civil constructions. The proposed panels were
produced with each lignocellulosic material residue. It was produced three replicates for each
type including plaster (being 18 panels in total). The sound insertion loss (SIL) measurement of
the above-mentioned panels have been performed using an acoustical treated inexpensive facility
developed based on the literature. The characterization of the acoustic behaviour of the studied
materials were analysed according to the IEC (61260-1). The acoustic measurements have been
done in the range of 20 Hz to 20 kHz and the analysis in octave bands have been performed. To
make the analysis easier, the overall range of frequencies mentioned above was divided as ‘low’,
‘middle’ and ‘high’ ranges. Additionally, the measurement of thickness, density and porosity
structure parameters of the lignocellulosic samples have been performed. According to the results
and doing a trade-off analysis, the eucalyptus presented the overall best performance considering
the overall range of analysis, being the banana pseudostem and sugarcane bagasse materials as
good competitors.
Kirjeldus
Received: January 19th, 2021 ; Accepted: May 20th, 2021 ; Published: October 5th, 2021 ; Correspondence: paricia.ponciano@ufla.br
Märksõnad
alternative building material, lignocellulosic panels, sound insertion loss, residue materials, articles