EFFICIENCY OF INDUSTRIAL AND CONSTRUCTION WASTE UTILIZATION IN THE PRODUCTION OF DRY BUILDING MIXTURES

Abstract

The article presents the results of theoretical and experimental research on the effectiveness of utilizing industrial and construction waste for the production of dry building mixtures (DBM). The physical and chemical properties of fly ash from thermal power plants, blast furnace slag, crushed concrete, and brick debris were studied, along with their influence on the rheological properties, strength, and performance characteristics of DBM. Optimal mixture compositions using secondary raw materials were developed, achieving a balance between technical properties, economic efficiency, and environmental sustainability. Experimental results confirmed that secondary components contribute to forming a dense cement matrix, increasing crack resistance, reducing water absorption, and enhancing compressive and flexural strength. It was demonstrated that the inclusion of up to 30% industrial and construction waste can reduce the carbon footprint of DBM production by 15–20%, decrease the consumption of natural resources, and minimize waste generation. A technological scheme for the preparation of secondary materials and formulations based on them was proposed. Optimal ratios of secondary components (fly ash, crushed concrete, and brick debris) were identified to ensure maximum efficiency in terms of physical and mechanical properties. The research results justify the widespread use of secondary raw materials in DBM production in the context of sustainable construction industry development. Additionally, the ecological and economic benefits of the proposed approach are discussed, and directions for further research are outlined to improve mixture compositions based on the regional raw material base.