Fast Curing Fluoroanhydrite Composition for Layer-by-Layer Extrusion (3D printing)

The results of a study on the development of a fast-curing composition based on fluoroanhydrite for layer-by-layer extrusion (3D printing) are presented. In the process of composition development, the optimal content of the main components – fluoroanhydrite, Portland cement, dry powder of a soluble sodium glass, hardening retardant – sodium phosphate, as well as micro-reinforcing chrysotile-asbestos fiber was determined. The compressive strength of the specimens was measured to be 6.9 MPa in the dry state and 4.6 MPa in the wet state. Studies of the microstructure of the material showed that the composition of the matrix is dominated by crystalline hydration products covering the fibers of chrysotile asbestos, which are evenly distributed in the structure of the composition. IR spectral analysis and differential thermal analysis of the composition showed the formation of gypsum dihydrate in the structure of the composition in combination with calcium silicate hydrates, which provide the necessary water resistance of the composition.

M.R. BEKMANSUROV, Engineer (postgraduate student) (This email address is being protected from spambots. You need JavaScript enabled to view it.),
G.I. YAKOVLEV, Doctor of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.),
A.F. GORDINA, Candidate of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.),
N.V. KUZMINA, Engineer (postgraduate student) (This email address is being protected from spambots. You need JavaScript enabled to view it.),
Z.S. SAIDOVA, Candidate of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.),
A.M. ALEXANDROV, Engineer (postgraduate student) (This email address is being protected from spambots. You need JavaScript enabled to view it.)
A.N. ZHUKOV, Engineer (postgraduate student) (This email address is being protected from spambots. You need JavaScript enabled to view it.)

Kalashnikov Izhevsk State Technical University (7, Studencheskaya Street, 426069, Izhevsk, Russian Federation)

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