Use of Dust Entrainment from the Gas-Cleaning System of a Cladder of Mineral Wood Production for Clinker-Free Binderм

The development of binders based on man-made industrial waste is one of the most popular areas of development of building materials science. One of the promising wastes is dust removal from the gas cleaning system of the mineral wool production cupola. The article presents the results of studies of the structure of dust entrainment, as well as the physical and mechanical properties of a clinker-free binder in comparison with Portland cement. The technological preparation of dust removal by sifting it through a 0.16 mm sieve and subsequent mechanical activation is proposed. The best values were shown by the composition of the binder with a specific-to-specific surface area of 733 m²/kg sealed with an aqueous solution of caustic soda with a concentration of 8.3 M. For this composition, during 28 days of normal hardening, the compressive strength was 54.3 MPa, bending strength was 6.6 MPa. The influence of the composition of the alkaline activator, the hardening conditions on the strength of the samples during bending and compression is considered. An assessment of the structure of the forming cement matrix, as well as its mineralogical composition, was carried out. The study of the products of the structure formation of the cement matrix from dust-entrainment is represented by cyolite group minerals.

P.A. FEDOROV, Candidate of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.) (This email address is being protected from spambots. You need JavaScript enabled to view it.),
D.A. SINITSIN, Candidate of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.),
G.Yu. SHAGIGALIN, Engineer (This email address is being protected from spambots. You need JavaScript enabled to view it.)

Ufa State Petroleum Technological University (1, Kosmonavtov Street, Ufa, 450064, Russian Federation)

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