ENVIRONMENTALLY FRIENDLY SOUND INSULATION MATERIAL FOR DOOR STRUCTURES

In modern conditions, an important requirement for door structures is to ensure high sound insulation characteristics while maintaining the environmental friendliness and lightness of the construction. The problem lies in developing door panels capable of absorbing a wide range of sound waves with minimal weight and the use of environmentally friendly materials. As part of the research, a two-chamber wooden door panel structure with a filling of basalt wool of different densities was developed and tested. Acoustic testing methods were used to determine the effectiveness of sound absorption at different frequencies. Special attention was paid to selecting the density and thickness of basalt wool layers for optimal sound absorption while preserving the lightness of the structure. The experimental results confirmed that basalt wool of varying densities has high efficiency in absorbing sound waves of different frequencies, allowing the door to effectively reduce both medium and high-frequency sounds as well as low-frequency noises. The two-chamber door structure with a combination of basalt wool layers of different densities demonstrated a significant increase in the sound absorption coefficient compared to traditional solutions. The achieved sound absorption and energy efficiency indicators make the developed structure a promising solution for modern construction projects, including administrative, public, and residential buildings. The use of environmentally friendly materials, such as basalt wool, meets modern requirements for sustainability and safety in construction. In addition, this design improves the acoustic environment of indoor spaces, enhancing living comfort and creating favorable conditions for work and relaxation. The use of basalt wool not only helps reduce noise but also ensures the durability and stability of sound insulation properties. The developed two-chamber wooden door with improved sound insulation properties is an innovative and eco-friendly solution for creating comfortable soundproof spaces. Additional benefits include increased energy efficiency by reducing heat loss through door panels, which contributes to lower heating costs and improves the environmental performance of buildings.