Physical and Mechanical Properties of Concrete Using Local Secondary Raw Materials

The article addresses the possibility of using in modern construction concrete rubble formed from demolition of buildings and marriage in the production of reinforced concrete products. The possibility of using crushed concrete waste as a large aggregate to improve the physical and mechanical properties of concrete has been experimentally confirmed. It has been shown that the replacement of natural gravel in the composition of concrete with secondary allows increasing its strength by 12%. An important role in the composition is played by the adhesive addition Silor Ultra T, which, in the process of solidification, equalizes the negative consequences of the increased content of dust particles in concrete received with the introduction of secondary gravel, intensifying hydration processes for a long period. Thus, studies have concluded that the properties of secondary gravel obtained from concrete rubble comply with the requirements of regulatory documents for aggregate for heavy concrete. Concrete composition of classes B25–B30 based on the secondary gravel from the concrete rubble formed at the demolition of the object of the house of Yakutsk with strength of 36,34 MPa and 39,42 MPa have been developed, which suggests the possibility of using secondary crushed stone in construction, thereby reducing the consumption of expensive natural stone materials.

A.S. SIDOROVA, Engineer (Postgraduate student)(This email address is being protected from spambots. You need JavaScript enabled to view it.)
S.G. ANTSUPOVA, Candidate of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.)
A.L. POPOV, Engineer (This email address is being protected from spambots. You need JavaScript enabled to view it.)

North-Eastern Federal University (50, Kulakovskogo Street, Yakutsk, 677000, Russian Federation)

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