Archives of Acoustics, 46, 3, pp. 539–545, 2021
10.24425/aoa.2021.138146

Influence of the Plaster Physical Structure on Indoor Acoustics

Edyta PRĘDKA
Technical University of Rzeszów
Poland

Adam BRAŃSKI
Technical University of Rzeszów
Poland

Małgorzata WIERZBIŃSKA
Technical University of Rzeszów
Poland

The article presents the main results of research on plaster samples with different physical parameters of their structure. The basic physical parameter taken into account in the research is plaster aeration. Other physical parameters were also considered, but they play a minor part. The acoustic properties of the modified plaster were measured by the sound absorption coefficient; the results were compared with the absorption coefficient of standard plaster. The influence of other physical, mechanical and thermal properties of plaster was not analyzed. The effect of modified plasters on indoor acoustics was also determined. To this end, an acoustic problem with impedance boundary conditions was solved. The results were achieved by the Meshless Method (MLM) and compared with exact results. It was shown that the increase in plaster aeration translated into an increase in the sound absorption coefficient, followed by a slight decrease in the noise level in the room. Numerical calculations confirmed this conclusion.
Keywords: plaster; aeration; sound absorption coefficient; acoustic impedance; architectural acoustics
Full Text: PDF

References

Bonfiglio P., Pompoli F. (2007), Acoustical and physical characterization of a new porous absorbing plaster, ICA, 19-th International Congress on Acoustics, Madrid, 2–7 September 2007.

Brański A. (2013), Numerical methods to the solution of boundary problems, classification and survey [in Polish], Rzeszow University of Technology Press, Rzeszow.

Brański A., Kocan-Krawczyk A., Prędka E. (2017), An influence of the wall acoustic impedance on the room acoustics. The exact solution, Archives of Acoustics, 42(4): 677–687, doi: 10.1515/aoa-2017-0070.

Brański A., Prędka E. (2018), Nonsingular Meshless Method in an Acoustic Indoor Problem, Archives of Acoustics, 43(1): 75–82, doi: 10.24425/118082.

Brański A., Prędka E., Wierzbińska M., Hordij P. (2013), Influence of the plaster physical structure on its acoustic properties, 60th Open Seminar on Acoustics, RzeszówPolańczyk (abstract: Archives of Acoustics, 38(3): 437437).

Chen L., Zhao W., Liu C., Chen H., Marburg S. (2019), Isogeometric fast multipole boundary element method based on Burton-Miller formulation for 3D acoustic problems, Archives of Acoustics, 44(3): 475–492, doi: 10.24425/aoa.2019.129263.

Chen L., Li X. (2020), An efficient meshless boundary point interpolation method for acoustic radiation and scattering, Computers & Structures, 229: 106182, doi: 10.1016/j.compstruc.2019.106182.

Cucharero J., Hänninen T., Lokki T. (2019), Influence of sound-absorbing material placement on room acoustical parameters, Acoustics, 1(3): 644–660; doi: 10.3390/acoustics1030038.

ISO 103542:1998 (1998), Acoustics  determination of sound absorption coefficient in impedance tube. Part 2: Transferfunction method.

Kulhav P., Samkov A., Petru M., Pechociakova M. (2018), Improvement of the acoustic attenuation of plaster composites by the addition of short-fibre reinforcement, Advances in Materials Science and Engineering, 2018: Article ID 7356721, 15 pages, doi: 10.1155/2018/7356721.

Li W., Zhang Q., Gui Q., Chai Y. (2020), A coupled FE-Meshfree triangular element for acoustic radiation problems, International Journal of Computational Methods, 18(3): 2041002, doi: 10.1142/S0219876220410029.

Mclachlan N.W. (1955), Bessel Functions for Engineers, Clarendon Press, Oxford.

Meissner M. (2012), Acoustic energy density distribution and sound intensity vector field inside coupled spaces, Journal of the Acoustical Society of America, 132(1): 228238, doi: 10.1121/1.4726030.

Meissner M. (2013), Analytical and numerical study of acoustic intensity field in irregularly shaped room, Applied Acoustics, 74(5): 661668, doi: 10.1016/j.apacoust.2012.11.009.

Meissner M. (2016), Improving acoustics of hard-walled rectangular room by ceiling treatment with absorbing material, Progress of Acoustics, Polish Acoustical Society, Warsaw Division, Warszawa, pp. 413423.

Mondet B., Brunskog J., Jeong C.-H., Rindel J.H. (2020), From absorption to impedance: Enhancing boundary conditions in room acoustic simulations, Applied Acoustics, 157: 106884, doi: 10.1016/j.apacoust.2019.04.034.

Piechowicz J., Czajka I. (2012), Estimation of acoustic impedance for surfaces delimiting the volume of an enclosed space, Archives of Acoustics, 37(1): 97–102, doi: 10.2478/v10168-012-0013-8.

Piechowicz J., Czajka I. (2013), Determination of acoustic impedance of walls based on acoustic field parameter values measured in the room, Acta Physica Polonica, 123(6): 1068–1071, doi: 10.12693/Aphyspola.123.1068.

Prędka E., Brański A. (2020), Analysis of the room acoustics with impedance boundary conditions in the full range of acoustic frequencies, Archives of Acoustics, 45(1): 85–92, doi: 10.24425/aoa.2020.132484.

Prędka E., Kocan-Krawczyk A., Brański A. (2020), Selected aspects of meshless method optimization in the room acoustics with impedance boundary conditions, Archives of Acoustics, 45(4): 647–654, doi: 10.24425/aoa.2020.135252

Qu W. (2019), A high accuracy method for long-time evolution of acoustic wave equation, Applied Mathematics Letters, 98: 135–141, doi: 10.1016/j.aml.2019.06.010.

Qu W., Fan C.-M., Gu Y., Wang F. (2019), Analysis of three-dimensional interior acoustic field by using the localized method of fundamental solutions, Applied Mathematical Modelling, 76: 122–132, doi: 10.1016/j.apm.2019.06.014.

Qu W., He H. (2020), A spatial–temporal GFDM with an additional condition for transient heat conduction analysis of FGMs, Applied Mathematics Letters, 110: 106579, doi: 10.1016/j.aml.2020.106579.

Shebl S.S., Seddeq H.S., Aglan H.A. (2011), Effect of micro-silica loading on the mechanical and acoustic properties of cement pastes, Construction and Building Materials, 25(10): 3903–3908, doi: 10.1016/j.conbuildmat.2011.04.021.

Stankevičius V., Skripkiūnas G., Grinys A., Miškinis K. (2007), Acoustical characteristics and physical-mechanical properties of plaster with rubber waste additives, Materials Science, 13(4): 304–309.

You X., Li W., Chai Y. (2020), A truly meshfree method for solving acoustic problems using local weak form and radial basis functions, Applied Mathematics and Computation, 365: 124694, doi: 10.1016/j.amc.2019.124694.




DOI: 10.24425/aoa.2021.138146

Copyright © Polish Academy of Sciences & Institute of Fundamental Technological Research (IPPT PAN)