FILLERS FOR DRY CONSTRUCTION MIXTURES FROM RECYCLING PRODUCTS OF CONSTRUCTION SCRAP
DOI:
https://doi.org/10.31649/2311-1429-2025-1-45-50Keywords:
aggregates for building mixtures, construction scrap, social and environmental impacts, dry building mixtures, recycling technology, resource-saving technology, solid inorganic waste, construction products.Abstract
The main directions of development of technologies and activities of enterprises in the building materials industry are justified.
The need to develop and implement technologies for recycling construction scrap residues for the production of building mixtures
was noted. The justification of the possibilities of implementing such technological solutions capable of ensuring real savings in
energy resources, reducing capital investment costs, and also allowing for significant improvement of the ecology of individual
regions affected by russian aggression is presented. The results of analytical studies of existing developments in the areas of
resource-saving technologies for processing construction and technogenic waste for the production of aggregates for building
mixtures are presented. A graphical interpretation of the results of computational and analytical studies of the possibility of
obtaining volumes of construction scrap and solid waste after dismantling destroyed residential buildings of typical building series
is presented. It is noted that the accumulated volumes of construction scrap obtained as a result of the destruction of buildings
and structures consist overwhelmingly of concrete, reinforced concrete, expanded clay concrete, and brickwork made of ceramic
and silicate products. The results of experimental studies on the processing of construction scrap from reinforced concrete
structures for the production of aggregates for building mixtures are presented. The compliance of the characteristics obtained
using the technologies of crushing and separation of materials with the regulatory requirements regulating the granulometry
indicators and physical parameters for traditional mineral aggregates has been confirmed. The recipe and technological
parameters for the production of concrete mix using a new type of aggregates are substantiated using regulatory and technical
literature. Laboratory tests using experimental samples of fine and coarse aggregates obtained from construction scrap produced
experimental series of concrete samples and conducted studies of their physical and mechanical characteristics. The feasibility
of using recycling technologies for the production of building mixtures using aggregates from construction scrap has been
confirmed; the obtained samples belong to the C16/20 concrete class, the most common in construction practice. It was also
noted that it is possible to transform recycling technologies in the conditions of a construction site, where piles of construction
scrap residues have already accumulated, because it does not require any new specialized technological solutions. The positive
effect of the presence of reactive substances on the surface of the obtained aggregates is shown, which in turn provides an
increase in the physical and mechanical characteristics of the samples while reducing the binder content. The formulation and
technological parameters of dry building mixtures for the manufacture of building products using the obtained artificial aggregates
have been developed and investigated. A program for further research into the predicted characteristics of model samples of
building mixtures using aggregates as products of recycling construction scrap is presented.
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