Recycling of Large-Capacity Concrete and Reinforced Concrete Waste in the Context of Realization of Full Life Cycle Contracts

The problem of ecological safety of construction and resource saving in the construction industry is touched upon. The modern stage of construction development is not conceivable without taking into account the theory of the full life cycle of buildings and structures. The life cycle includes the stage of design, implementation of the project-construction, operation stage, including current and major repairs, the stage of modernization (or technical re-equipment), and, most importantly, the stage of dismantling (disposal) of the object. It is noted that the processing of construction waste is one of the promising ways to “improve” the environmental situation. Re-involvement of construction waste, through their targeted processing (recycling), makes it possible to maintain an environmentally friendly environment of modern cities, as well as significantly reduce the cost of production of building materials from traditional, primarily natural materials, the extraction and processing of which also causes significant damage to the environment. t is established that the utilization of concrete scrap, formed as a result of human economic activity, is possible by its purposeful recycling. The results of experimental studies of the properties of inert materials obtained by recycling concrete and reinforced concrete products are presented. The grain composition and the main properties of fine and coarse aggregate from recycled concrete, as well as their suitability for use in the construction materials industry, are determined. The results of the study of the construction and technological potential of concrete processing products make it possible to consider them as components when synthesizing hardening systems. Such systems of hardening (from fine concrete scrap) are formed due to the mixed mechanism-a combination of hydration and contact condensation. In this case, the mechanical properties of building composites based on them depend not only on the intensity and completeness of hydration of its constituent minerals, but also on the degree of convergence of particles in the process of structure formation.

M.A. GONCHAROVA, Doctor of Sciences (Engineering)
P.V. BORKOV, Candidate of Sciences (Engineering),(This email address is being protected from spambots. You need JavaScript enabled to view it.)
H.G.H. AL-SURRAYVI, Magister

Lipetsk State Technical University (30, Moskovskaya Street, Lipetsk, 398055, Russian Federation)

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