Abstract
The object of the study is filling mixtures based on waste from the mining, energy, and copper-smelting industries, Portland cement, and superplasticizer. In the course of the study, standardized methods for studying the properties and quality indicators of industrial waste and filling mixtures based on it and mathematical methods for optimizing the compositions of mixtures, statistical methods for analyzing the results of experiments, were used. It has been established that, in terms of their physical and mechanical characteristics, stowing mixtures based on waste are not inferior to mixtures based on natural materials. The mathematical method for planning experiments has revealed the dependences linking strength with the quantitative characteristics of the components of the filling mixture. Based on the established regularities, an optimization model has been developed that minimizes the consumption of the binder and establishes a relationship between the composition and properties of the mixture.
Highlights
An analysis of previous studies has shown that very important positive results have been achieved in improving energy efficiency and creating resource-saving technologies in the production of backfill mixtures for filling mined-out spaces formed during ore mining
The analysis of the scientific results obtained on the development of energy and resource-saving technologies involving the use of industrial waste shows that in studies aimed at the development of compositions of effective mixtures, in particular, on the production of filling mixtures based on secondary products and chemical additives, there are insufficiently studied scientific problems, which indicates the need for a deeper study of these issues[1, 2]
Special attention is paid to the development of compositions of new building materials, in particular, filling mixtures based on local raw materials and industrial waste and the creation of energy-saving technologies for their production [3]
Summary
An analysis of previous studies has shown that very important positive results have been achieved in improving energy efficiency and creating resource-saving technologies in the production of backfill mixtures for filling mined-out spaces formed during ore mining. In the world of construction and the mining industry, the share of the use of efficient energy-saving technologies is increasing Primarily mining, fuel-energy, chemical, and metallurgical, ensures their strength and stability In this regard, special attention is paid to the development of compositions of new building materials, in particular, filling mixtures based on local raw materials and industrial waste and the creation of energy-saving technologies for their production [3]. The recommended ways to increase their physical and mechanical characteristics, as a rule, are associated with the need for significant overruns of the binder, the use of natural resources, and technological methods that require additional labor and energy consumption [4, 5]
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