This article is a study of the physical and mechanical characteristics and wave parameters of porous fibrous materials (PFM) used in providing sound insulation and vibration protection of buildings and structures. In the work, the classification of porous-fibrous materials according to the initial raw material and various degrees of rigidity is carried out, the main physical and mechanical characteristics and wave parameters of porous fibrous materials, and theoretical methods for their determination are presented. The results of laboratory measurements of the physical-mechanical and wave characteristics of PFM samples (glass and stone bases of various density and thickness) are presented. An extensive experimental study has been carried out in order to evaluate the main relationships between the sample material, its density, feedstock, structure, size, and its acoustic, physical-mechanical and wave characteristics. The results of the study are of great practical importance for the development of acoustically effective building materials and their optimal use in construction and engineering systems.
Keywords: acoustic measurements, acoustic design, building materials, characteristics of porous-fibrous materials, sound insulation, vibration protection of buildings and structures