The Role of a Polyfractive Slag Additive in the Structure of Fine-Grained Concrete

Number of journal: 5-2022
Autors:

Povarova O.A.

DOI: https://doi.org/10.31659/0585-430X-2022-802-5-68-72
УДК: 666.973

 

AbstractAbout AuthorsReferences
The results of studies of the rational composition of fine-grained slag concrete for the production of reinforced concrete products by the method of formless molding are presented. The paper presents the results of experimental studies on the use of screening of slag crushed stone as a mineral fine-ground additive and filler in fine-grained structural cinder blocks. The rational composition of the fine ground additive at the joint grinding of granulated blast furnace slag and the screening of slag rubble was established. When introducing a slag additive, there is an increase in the activity of the binder by 15-20%; the thermal conductivity decreases with an increase in the proportion of the additive. The compositions of fine-grained slag concrete recommended for the production of reinforced concrete products by the method of formless molding are given. According to the test results, the consumption of cement binder per strength unit in the recommended compositions is 40-45% less than in traditional concretes without fine ground polyfractive slag additive. The practical significance of the research results will make it possible to rationally use the screening of slag rubble in the production of effective mineral fine ground slag additives and structural fine-grained slag concrete with low thermal conductivity and specific consumption of cement binder.
О.A. POVAROVA, Senior Lecturer (This email address is being protected from spambots. You need JavaScript enabled to view it.)

Cherepovets State University (5, Lunacharsky Street, Cherepovets, 162602, Russian Federation)

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For citation: Povarova O.A. The role of a polyfractive slag additive in the structure of fine-grained concrete. Stroitel’nye Materialy [Construction Materials]. 2022. No. 5, pp. 68–72. (In Russian). DOI: https://doi.org/10.31659/0585-430X-2022-802-5-68-72


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