The growing terrorism threats across the world play an important role in the design of civil buildings and living areas. The safety of personnel is a top priority in unclassified buildings, especially military buildings. However indoor air quality and thermal comfort has a direct impact on personal productivity and ability to concentrate on duties and affect the decision making in stress conditions. The use of wooden structures is becoming more common in the building construction, and application of wooden frame structures for the construction of new buildings as well as for retrofitting the existing buildings. Prefabricated wooded frame construction perfectly fits need of unclassified buildings, allowing significant reduction of construction time and integration of various active and passive elements, such as a fresh air supply duct. Within the scope of this paper a 12 mm thick ballistic panel made of aramid was tested. Ballistic panel, thermal conductivity, and fire resistance of wooded construction panel with embedded air duct were analyzed for the various modelled exterior wall solutions. The main advantage of the proposed technology is fast and qualitative modular construction of unclassified buildings, providing all modern requirements not only for safety, but also for the energy efficiency and indoor air quality. It was found that bullet proof aramid panels do not reduce overall fire safety in comparison to traditional construction materials. However embedded outdoor air supply ducts significantly reduces construction heat transfer coefficient.
Bullet-proof walls are recently attractive also outside of specialized areas with the most threat of attack. Nevertheless, an average wall cannot protect us from an intentional or stray bullet. Therefore, five stands were made of gypsum wall panels, ordinary plasterboard, and Knauf bullet-proof plasterboard, fired with two different calibers of weapons. The results were documented through photography. The test results show the ballistic resistance of enhanced materials, not ordinary plasterboard. The obtained results are compared with the technical information. The aim was to test whether plasterboard, the most used material in construction, is comparable to bullet-proof structures. These results will be used to complement the standard LVS 1061 “Gypsum boards and board systems. Design and use rules”, as well as for individual use in protection against external bullet threats or to prevent ricochets.
Fibrous composite materials with metal matrices are effectively employed in the newest technical fields. Researches related to the development of composite materials, containing W-B fibers are among them. Fibrous composite materials are effectively used in newest technical industries because of their high durability, small weight and other valuable properties. The paper describes the features of grinding Al-W-B waste using a disintegrator to obtain W-B fiber powder with a specified particle size. A number of mixtures with the metal substrate are offered. Methods for preparing samples of various compositions containing W-B fibers are observed. Results of research of physical-mechanical, tribological properties and microstructure of materials are brought.
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