Experimental Studies of Sound Insulation of Sandwich Panels with Shotcretedcladdings

Number of journal: 7-2022
Autors:

Kuzmin D.S.,
Monich D.V.,
Grebnev P.A.,
Gradova O.V.

DOI: https://doi.org/10.31659/0044-4472-2022-7-18-23
УДК: 699.844

 

AbstractAbout AuthorsReferences
The results of experimental studies of sound insulation of frameless sandwich panels with shotcretedcladdings, intended for use in buildings as light partitions between rooms, are presented. In the process of applying the shotcreted layer, the mortar is applied to the surface, followed by leveling. The construction of internal enclosing structures of buildings using shotcrete technology is increasing every year. At the same time, the soundinsulating properties of this type of enclosureshave not been studied.The measurements were carried out in laboratory conditions, with obtaining the frequency characteristics of the sound insulation of the enclosures in one-third octave frequency bands, in the range from 100 to 5000 Hz. The effect of the thickness of shotcretedcladdings on the sound insulation of enclosureshas been studied. A comparison of the frequency characteristics of sound insulation of sandwich panels with shotcreted claddings and sandwich panels with sheet claddingsis presented. Shotcretedcladdingswere made from gypsum mortar. Gypsum-fiber sheets and oriented strand boards were used as sheet claddings.The analysis of the received experimental results is carried out. It is determined that the forms of the frequency characteristics of the sound insulation of sandwich panels with shotcreted claddings and sandwich panels with sheet claddings generally correspond to each other. The frequency ranges in which the most significant dips of sound insulation of the samples are located are established.Methods for regulating of sound insulation of sandwich panels with shotcretedcladdings in the ranges near the resonant frequency of the “mass-spring-mass” system and the boundary frequency of the region of total spatial resonances are determined.
D.S. KUZMIN1, postgraduate student (This email address is being protected from spambots. You need JavaScript enabled to view it.),
D.V. MONICH1, Candidate of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.),
P.A. GREBNEV1, Candidate of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.);
O.V. GRADOVA2, Head of sector (This email address is being protected from spambots. You need JavaScript enabled to view it.)

1 Nizhny Novgorod State University of Architecture and Civil Engineering (65, Ilyinskaya Street, Nizhny Novgorod, 603950, Russian Federation)
2 Research Institute of Building Physics, Russian Academy of Architecture and Construction Sciences (21, Lokomotivny Driveway, Moscow, 127238, Russian Federation)

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For citation: Kuzmin D.S., Monich D.V., Grebnev P.A., Gradova O.V. Experimental studies of sound insulation of sandwich panels with shotcretedcladdings. Zhilishchnoe Stroitel’stvo [Housing Construction]. 2022. No. 7, pp. 18–23. (In Russian). DOI: https://doi.org/10.31659/0044-4472-2022-7-18-23


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