New Unconventional Additives in Concrete Technology for Expansion its Functionality

Abstract

Functional enhancement of concrete, giving it heat-resistant properties becomes possible while adding mill ground additions based on silicon carbide materials of the region. The selection of silicon carbide waste and secondary production materials as a filler for the production of concrete with heat-resistant properties was based on the following principles: dispersion, the chemical composition, phase composition that reflect the chemical activity of the material in relation to the concrete binder. The thermal resistance of concrete has increased fivefold. In forming concrete structures with addition of silicon carbide occurs embedding into the structure of hydrates fine powder silicon carbide cyclone dust, with the chemical processes behaviour in the boundary contact zone between binder and filler. The increase of thermal resistance can attribute the resulting concrete composition to the category of heat-resistant concretes, and that significantly expands the functionality of concrete.

Methodological Approaches in Assessing the Possibility of Using Waste Electrocorundum Materials in Concrete Compositions

“…is one of the main directions of solution of resource-saving, environmental and economic problems of the region. In its turn, the application of industrial waste in the production of building materials and products greatly expands the raw material base of the construction industry and significantly increases the efficiency of investment [4,5,19].…”

“…The current trend of domestic and global development of refractories production is in introducing of resource-saving technologies, increasing of production and consumption of highly efficient unshaped refractories, which is accompanied by a significant reduction in heat processed refractory products. The high cost of foreign raw materials significantly increases the cost of the final refractory products, and often limits its use, therefore the main trends in the domestic manufacture of refractories are the development of new composite building materials resistant to high temperatures, expanding of their range with the rational use of natural resources, waste of the industrial enterprises of the regions [4,5].…”

Результаты Применения Взаимодополняющих Методов Оценки Экспериментального Тяжелого Бетона

“…Строительные науки / Construction Sciences З аводы железобетонных изделий работают в условиях рыночной конкуренции и вынуждены искать варианты сокращения издержек в производстве бетонной смеси и готовой продукции. Многие исследовательские задачи направлены именно на оптимизацию составов бетонных смесей при обеспечении наперед заданных характеристик готового материала [1][2][3], что обеспечивается разработкой модифицированных цементных бетонов с минеральными добавками природного, искусственного, техногенного происхождения [4][5][6][7][8][9], введением добавок-пластификаторов [10][11][12][13][14] или комплексных добавок [15][16][17][18][19][20][21][22][23], а также подбором оптимального зернового (гранулометрического) состава [24]. Одним из направлений снижения себестоимости является совершенствование составов бетонных смесей и пересмотр норм расхода материалов, что не противоречит действующим нормативным документам.…”

Heat-Resistant Composite Materials Based on Secondary Material Resources

“…Portland cement modified with double superphosphate in the presence of a plasticizer was used as a binder. Preliminary tests of the developed compositions of heat-resistant compositions using high-temperature aggregates based on mechanical engineering and metallurgy wastes yielded positive results in terms of increasing compressive strength and thermal resistance of samples of heat-resistant compositions [8][9][10][11][12][13].…”