title: ÐÐºÑÑÑÐ¸ÑÐµÑÐºÐ¸Ðµ ÑÐ²Ð¾Ð¹ÑÑÐ²Ð° Ð¼ÐµÐ¶ÐºÐ¾Ð¼Ð½Ð°ÑÐ½ÑÑ Ð¿ÐµÑÐµÐ³Ð¾ÑÐ¾Ð´Ð¾Ðº
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° ÑÐ¿ÐµÑÐ¸Ð°Ð»Ð¸ÑÑÐ°
titleType: Subtitle
title: Acoustic properties of interior partitions
Creators: name: ÐÐ¸ÑÑÑÐ¸Ð½Ð°, ÐÐ½Ð°ÑÑÐ°ÑÐ¸Ñ
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2021
Subjects: Ð°ÐºÑÑÑÐ¸ÐºÐ°
Ð·Ð²ÑÐºÐ¾Ð¿Ð¾Ð³Ð»Ð¾ÑÐµÐ½Ð¸Ðµ
ÑÑÐµÐ¸ÑÑÑÐ¹ Ð±ÐµÑÐ¾Ð½
Ð³Ð°Ð·Ð¾Ð±ÐµÑÐ¾Ð½
Ð¸Ð½Ð´ÐµÐºÑ Ð¸Ð·Ð¾Ð»ÑÑÐ¸Ð¸ Ð²Ð¾Ð·Ð´ÑÑÐ½Ð¾Ð³Ð¾ ÑÑÐ¼Ð°
Ð¼Ð¾Ð´ÐµÐ»Ñ Ð¿ÐµÑÑÐ°ÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð½Ð¾Ð¹ Ð¿Ð°Ð½ÐµÐ»Ð¸
Ð¿Ð¾ÑÐ¸ÑÑÐ¾ÑÑÑ
acoustics
sound absorption
cellular concrete
aerated concrete
air noise insula-tion index
performed panel model
porosit

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description: People are affected by a complex of acoustic effects of various spectra. Based on this, it is relevant to design composites with a given porous structure that can effectively absorb acoustic energy of various ranges. However, materials with open porosity have high water absorption, low frost resistance. Based on this, it is necessary to create highly porous materials while ensuring the standard strength and durability. To achieve the goal, the following tasks are completed: - A theoretical model of the perforated panel is selected, taking into account the assumptions of equality of pores in the volume of the material, - The relationship between the physical and mechanical properties of aerated concrete with sound absorption and porosity is established and the optimal composition of concrete is selected, - The sound absorption coefficient was calculated when varying the characteristics of the concrete panel using two calculation methods (taking into account the percentage of open porosity and the type of aggregate and without) , - Calculated the air noise isolation index, compared with the standard. Based on the theoretical model, it is obtained that cellular concretes that have sound absorption coefficients reaching values of 0.52-0.71. The dependencies are established: the higher the frequency, the greater the sound absorption coefficient for a given material, the higher the frequency, the greater the sound absorption coefficient for a given material, the greater the porosity, the greater the sound absorption coefficient for a given material, the greater the percentage of open porosity, the greater the sound absorption coefficient. The values of the samples of structural and structural-thermal insulation purposes have indices higher than the required one (Rw=64 dB, 54 dB), respectively, can be used in residential construction for interapartment partitions.