Determination of the aggressiveness of the factors of subtropics coastal environment of the Russian Federation towards construction materials

V.P. Rudnev

Branch of Institute of Natural and Technical Systems in Sochi, Kurortny Av., 99/18

E-mail: stc-sochi@mail.ru

DOI: 10.33075/2220-5861-2020-2-62-71

UDC 620.193.21                                                             

Abstract:

   The problem of ensuring safe exploitation of various structures and sophisticated equipment has been particularly relevant in recent years. Consequently, stringent requirements are placed on the reliability of the materials used in the units and constructions of products. In addition, reducing losses from the material corrosion and aging is one of the most important scientific, technical and economic problems of the world economy. Apart from mechanical wear of parts, technical condition of mechanisms and constructions is significantly affected by the processes of corrosion and aging of construction materials under the influence of environmental factors. The zone of wet subtropics is one of the most aggressive climatic regions for materials of different class.

   In this research, the main impact factors of the coastal environment of wet subtropics of the Russian Federation in the Imereti lowland area (Greater Sochi area) were evaluated at the coastal test site. In the process of research, long-term average annual and limit values of meteorological parameters and aero-chemical corrosion activators were determined. The atmospheric corrosiveness indices were obtained in accordance with National Standard GOST 9.039 and ISO 9223. Data on the degree of affect of aggressive factors on polymeric materials (intensity, dose parameters and limit values) were obtained, a wide range of biodestructive strains were revealed.

   According to the research results, a statement can be made of the pronounced aggressive nature of the analyzed environment, the absence of acute seasonal change in the influencing factors and, therefore, the year-round course of corrosion processes, aging and biodeterioration, which makes the region of wet subtropics of the Russian Federation one of the important representative zones for construction material tests.

Keywords: environment, aggressive factors, microbiological lesions, metals and alloys, polymeric materials.

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