EFFICIENCY OF USE OF INDUSTRIAL WASTE IN CONSTRUCTION
Authors: Kadol Larisa ,   Kryvyi Rih National University, Kurinnyi Serhil , Veis Ihor ,   Kryvyi Rih National University,   Kryvyi Rih National University
Published: July 2024

The article examines the management of industrial waste. The legislative regulation of waste is given – "National strategy of waste management until 2030", the Law of Ukraine "On waste management" and the Resolution of the Cabinet of Ministers of Ukraine "Some issues of classifying substances or objects as by-products", directives of the European Union. Production waste should get a second life. When establishing the criteria under which production residues can receive this status, the government took the relevant experience of Poland, Germany, the Czech Republic, Bulgaria, Serbia and Great Britain. Sad statistics of the amount of accumulated waste in Ukraine, including in the Kryvorizka Basin, are given. Obviously, this is a serious environmental challenge; a terrible legacy that our descendants receive. PJSC ArcelorMittal Kryvyi Rih is the world's largest metallurgical giant. But due to the lack of advanced production technologies, more than 150 million tons of waste annually fills the landfills and sides of sludge storage facilities. Already, 9.1 billion tons of industrial waste are accumulated on the area of 13,000 hectares of the Kryvyi Rih Basin, and annually it becomes 70–80 million tons more. Today, ArcelorMittal Kryvyi Rih implements the project for the construction of the "Tretya Karta" tailings storage facility, which is vital for the safe storage of industrial waste from its production, the land area under dumps for the storage of waste rock is increasing every year. Directions for the use of MMC industrial waste in construction – in the production of slag portland cement, slag-alkali concrete are given. There are innovative developments in the production of sulfate-resistant concrete with the involvement of slurry suspension (active) using the bubbling method. This is a rather innovative technology of Kryvyi Rih researchers, which makes it possible to prepare sulfate-resistant concrete mixtures with reduced costs and with specified properties in a fairly energy-efficient and cost-minimizing manner. Industrial and civil construction in the Kryvyi Rih mining and ore basin is associated with the problem of both the construction itself and the further operation of surface and underground structures in conditions of significant mineralization of groundwater. Standard provision of corrosion resistance of underground concrete and reinforced concrete structures occurs due to the use of sulfate-resistant concrete with the use of plasticizers with anti-corrosion properties. The proposed and implemented technology of using an organo-mineral complex - dusty sludge with a sulfate suspension up to 20% with a plasticizer to increase the sulfate resistance coefficient of concrete on ordinary Portland cement and obtain anti-corrosion properties of concrete and reinforced concrete structures. Porosity of concrete changes, cement consumption is saved. The production of sulfateresistant concrete with the involvement of slurry suspension (active) is carried out by the bubbling method. The proposed OMK provides an opportunity to save 20% of cement and anti-corrosion properties of the concrete mix and solves the issue of waste utilization.