Biological resistance of polymeric pipeline materials

Abstract

Currently, the problems of biodeterioration are becoming crucial in assessing the durability of buildings and structures for various purposes. Metal, reinforced concrete, polymer, and other products and structures, including the pipelines for water and gas supply, water disposal, etc., are subject to biodeterioration. Biodeterioration processes in construction are considered in many scientists and specialists’ works. From their works it follows that changes in the properties of pipeline materials as a result of microbiological corrosion can lead to a shutdown of facilities, accidents. Materials are exposed to biological and mechanical influences in natural conditions, therefore, the need to study various factors: the chemical composition of the materials used, density, temperature range, and the field of these materials’ use of relevant.The article presents the studies’ results of soil corrosion of samples from polymer pipes. The descriptions of pipeline materials from different manufacturers are given., The samples were selected for the research from thermoplastic polymers based on polyethylene and polypropylene, including those reinforced with fiberglass. The samples were aged in various layers of soils belonging to the groups of chernozems and loams. Methods for assessing the materials’ accreting degree by microorganisms are given. In the course of the research, the species composition of microorganisms accreting on the samples during the tests was established; the data on changes in the samples’ mass content are revealed. The results can be used to assess the biological resistance of pipeline materials.