Abstract
Polymersilicate concrete is used for structures of industrial buildings in many industries, where production processes form an acidic wet- gas operating environment. The lightweight polymer silicate shungizite concrete, proposed by the author for external walls, can also be attributed to these materials. The polymersilicate composition is based on the components of schungite and schungizite. The composition also included liquid glass, sodium silicofluoride and furyl alcohol. These ingredients are usually adopted for polymersilicate concrete. Previously, the author carried out the research of physical and mechanical properties of the composition. The components based on schungite and schungizite were chosen because of their high acid resistance. The issue of the corrosion resistance of reinforcement in light polymer-silicate concrete has not been studied enough. This article presents the results of investigations of the corrosion resistance of steel reinforcement in polymer silicate shungizit concrete. The investigations were carried out in an airy environment of high humidity and in solutions of sulfuric acid of various concentrations. After the established time limits for corrosion testing, the corrosion of reinforcement in samples was not observed. Such a result was obtained due to the dense structure of the material and high acid resistance of the constituent components on the basis of schungite and shungizite. There is no need for additional protection of the concrete surface to prevent corrosion of the reinforcement in it . The author recommends the use of the material for reinforced structures of external walls exposed to an acidic wet- gas operating environment.
Highlights
The author's scientific research is related to the issue of increasing the durability of the outer walls of buildings with an aggressive production environment
The stylobate parts of the external walls of buildings located on major highways are constantly exposed to the negative effects of the aggressive environment that is created by the exhaust gases
From 15 to 75% of buildings and structures are exposed to the destructive effects of atmospheric and industrial aggressive environments
Summary
The author's scientific research is related to the issue of increasing the durability of the outer walls of buildings with an aggressive production environment. Building structures of many industries are exposed to the destructive effects of an aggressive technological environment. From 15 to 75% of buildings and structures are exposed to the destructive effects of atmospheric and industrial aggressive environments. The chemical composition of shungite and shungizite according to the results of laboratory studies are shown in table 2. The author has developed polymer silicate compositions with schungizite https://doi.org/10.10 51/e3sconf /202016402032 gravel and finely ground schungite and schungizite fillers. In the polymer silicate solution, finely ground schungite and schungizite are used These components are waste products of shungizite gravel. Structures of heavy polymer silicate reinforced concrete are successfully used in acidic environments at non-ferrous and ferrous metallurgy enterprises, as well as in the chemical industry. Reinforcing corrosion in polymer silicate schungizite concrete has not been previously investigated
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