Chemically resistant material for repair of exterior walls of non-ferrous metallurgy buildings
Abstract
Chemically resistant material for repair of exterior walls of non-ferrous metallurgy buildings
Incoming article date: 04.04.2020The structures of the external walls of buildings of non-ferrous metallurgy enterprises are destroying under the influence of an aggressive production environment. The results of scientific research on the development of material for partial or complex repair of the external walls of buildings of non-ferrous metallurgy enterprises are presented. The material developed by the author belongs to the group of polymer silicate compositions. It is lightweight polymer silicate shungizit concrete (LPSHС). This material is highly resistant to acidic wet gas production environment, typical for non-ferrous metallurgy enterprises. Building structures made of this material do not need to be additionally protected with chemically resistant materials. Shungizite gravel was selected as a lightweight porous aggregate. This lightweight porous aggregate is obtained by firing a chemically resistant shungite mineral. Several polymer silicate compositions have been selected. The properties of compositions affecting the durability, chemical resistance and energy efficiency of exterior walls have been studied. The article presents the results of comprehensive studies of the physico-mechanical properties of a material, its chemical resistance, and thermal performance. It is also shown that the reinforcement in LPSHC is well preserved. Studies have shown that the use of the developed material can provide high operational reliability of the external walls of buildings of non-ferrous metallurgy enterprises. According to regulated quality indicators and a combination of properties, LPSHС meets the requirements for exterior walls of non-ferrous metallurgy enterprises. The article also provides a list of production workshops for the application of LPSНС. The material can be used in other industries with similar aggressive environments.
Keywords: exterior walls, durability, non-ferrous metallurgy, acidic wet gas production environment, polymer-silicate shungizit concrete, physical and mechanical properties, energy efficiency of wall structures