Abstract
There are thousands of kilometers of noise protection screens around the world along roads, railways and near airports. The use of such screens poses some issues. Barriers often lack the required level of sound absorption and have low durability. Screens can be noise-absorbing, noise-reflecting or both. Sound absorbing materials are used to suppress noise at medium and high frequencies. For sound deadening at low frequencies, resonant absorbers are used; they are Helmholtz resonators combined into a single structure. When panels reach the end of their life cycle, they must be recycled. Separating wood, metal, fiberglass or rock wool slabs wrapped in fiberglass is not easy. The production of mineral fiber requires a lot of energy. A selection of materials has been proposed and the properties of fine-grained concretes for the further manufacture of a noise-protective panel have been investigated. The perforated front and blank rear walls are made of fine-grained basalt fiber-reinforced concrete reinforced with alkali-resistant basalt fibers. The results of studies of fine-grained basalt concrete confirmed the effectiveness of the combined use of basalt fibers and superplasticizer Master Glenium 115. The physical and mechanical characteristics of basalt fiber-reinforced concrete are increased by about 70–80 % compared to traditional concrete, which will further increase the durability of imitation noise protection panels.
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