Аңдатпа
The article discusses the process of obtaining a composite material based on fly ash and wollastonite as a substitute for Portland cement. The processing of accumulated fly ash has an ecological effect and has a positive impact on the environment. The phase-element compositions, structural features of fly ash, wollastonite and composite material were studied using a modern instrumental method. A methodology for conducting experimental work on obtaining composite materials based on fly ash and wollastonite with the establishment of optimal process parameters is presented. Also provided are established State standards for obtaining cellular concrete and determining their physical and mechanical characteristics. The developed composite material replaces 30% of the main components of Portland cement and creates macropores in the obtain of cellular concrete. The resulting cellular concrete, which makes up 30% of the composite material, has a porous structure, a density of 600-615 kg/m 3 and compressive strength reaching up to 2.63 MPa. The resulting cellular concrete corresponds to concrete grade D600, concrete class equal to B 2.5-3.5 lightness, strength and thermal insulation and is widely used in construction, for the creation of wall blocks, partitions, and floor slabs. Based on the results of radiological studies, it was established that the value of the sum of the specific activity of radionuclides (A), Bq/kg does not exceed the established norm and the use of the developed cellular concrete in construction is safe. The developed cellular concrete is of great interest in the construction industry, especially in the construction of residential complexes, but has limitations in application. Cellular concrete products are used in monolithic structures to close walls between floors without load from above. Cellular concrete with the D600 grade is not intended for loads from above, but is widely used for the creation of wall blocks and partitions.