INNOVATIVE APPROACHES TO DESIGNING SOUND INSULATION IN HISTORIC BUILDINGS DURING RECONSTRUCTION

The modern reconstruction and restoration of historic buildings constructed according to individual projects requires individual approaches to the design of sound insulation in a wide range. Therefore, all means of protection against acoustic impacts should be designed individually for each building. A methodology for designing materials and structures to reduce the acoustic load on the environment of historic buildings has been developed. To effectively shield infrasound and low-frequency sound, a mathematical tool for designing resonant-type protective structures has been developed. For absorption of medium and high frequency noise, an easy-to-use mathematical tool for designing porous materials of small thickness is proposed. The main advantages of such materials are manufacturability and the ability to cover large areas of complex configuration without distorting the appearance of the interior and exterior of buildings. This makes it possible to ensure that the noise level in buildings is within the standard range during their reconstruction and restoration. The calculation results have been verified. Acceptable convergence of theoretical and experimental data over the entire sound range is shown. The possibility of expanding the functionality of porous noise-absorbing materials is substantiated.