This article is devoted to the study of methods for investigating the physico-mechanical properties of heat-resistant concrete. The research utilized literature analysis, experimental testing methodology, physico-mechanical tests, and statistical analysis to determine the behavior of concrete under high-temperature conditions. Samples prepared from local raw materials (cement, gravel, sand) and heat-resistant additives (aluminum oxide, shungite) were tested at temperatures of 200°C, 400°C, and 600°C. The results revealed that as temperature increased, compressive strength decreased by up to 53%, while additives improved stability by 10-15% (p < 0.05). The article analyzes the advantages and limitations of the applied methods and evaluates the potential for utilizing local resources in Uzbekistan. The findings contribute to the adoption of environmentally friendly and cost-effective materials in the construction industry.

Heat-resistant concrete, physico-mechanical properties, research methods, local raw materials, aluminum oxide, shungite, statistical analysis, ecological sustainability, construction materials.

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