Composition and Rheological Properties of Molding Mixtures on a Composite Gypsum Binder

In low-rise construction, 3D technology is one of the new and promising, for the development of which it is necessary to create special materials with a complex of modifying additives with the necessary regulated properties. Effective for these purposes are molding mixtures based on composite gypsum binders (CGB), which have significant advantages in the possibility of regulating the setting time and hardening speed within a wide range compared to mixtures based on Portland cement. The results of experimental studies of the rheological characteristics of fast-hardening molding mixtures based on composite gypsum binders with a complex of organic additives, which were studied on a rotary viscometer “RHEOTEST RN 4.1”, are presented. The studies conducted confirm the possibility of controlling the rheological properties of special molding mixtures on composite gypsum binders due to combined functional and rheologically active additives, ensuring the optimization of their properties for the characteristics of various types of molding equipment and the tasks to be solved. It is established that the developed special molding mixtures based on CGB for 3D additive technologies of low-rise construction without aggregate and with quartz sand quickly harden and gain strength in an early period.

N.V. CHERNYSHEVA, Doctor of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.),
V.S. LESOVIK, Doctor of Sciences (Engineering), Professor (This email address is being protected from spambots. You need JavaScript enabled to view it.),
M.Yu. DREBEZGOVA, Candidate of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.),
D.A. MOTORYKIN, Engineer (graduate student) (This email address is being protected from spambots. You need JavaScript enabled to view it.),
E.N. LESNICHENKO, Engineer (graduate student) (This email address is being protected from spambots. You need JavaScript enabled to view it.),
A.L. BOCHARNIKOV, Student (This email address is being protected from spambots. You need JavaScript enabled to view it.)

Belgorod State Technological University named after V.G. Shukhov(46, Kostyukova Street, Belgorod, 308012, Russian Federation)

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