Use of man-made wastes in bonding technology

Objective. Improving the quality and durability of construction materials while reducing the costs for their implementation and operation is an urgent task of building materials science. New technologies are based on the dominant position of the active binder component, responsible for accelerating the hydration processes of the binder, the targeted formation of the phase composition and changes in the structure of the cement stone. Combination of clinker and mineral parts, inclusion in the system of chemical modifiers, correct formulation design and technology of preparation of the binder composition and concrete mixture will achieve the required design strength, reduce cement consumption and cost of the product.

Method. The studies were conducted according to the normative documents GOST 310.4-81 Cement. Bending and compression strength methods; GOST 310.3-76 Cements. Methods for determination of normal density, latching times and evenness of change in volume; GOST 30515-2013 Cements. General technical conditions. GOST 10180-2012 Concrete. Methods of determination of strength by reference samples.

Result. A complex pozzolanic additive has been obtained, the material composition of which will allow for the creation of a denser stone structure, due to an additional active source of unhydrated calcium silicates, sodium and calcium aluminosilicates. The resulting filled binding agent has properties that are higher than those of the control samples. Using local inert material and saving 25% of clinker share developed heavy concrete compositions classes B20-22.5, widely used in the filling of foundations, slabs, stairways, tiles and other concrete and concrete products.

Conclusion. The proposed research results will make it possible to successfully implement projects of global importance, creating sustainable, durable and long-lasting concrete structures. The work was carried out within the framework of the state assignment of the Grozny State Oil Technical University named after acad. M.D. Millionshchikov FZNU-2024-0003 "Development of a set of low-carbon technologies for increasing the productivity and sequestration potential of the ecosystem in urban areas with the production of secondary composite materials for multifunctional purposes".

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