RAW MATERIAL MIX FOR OBTAINING CONSTRUCTION MATERIAL Russian patent published in 2013 - IPC C04B28/04 C04B111/20 

FIELD: chemistry.

SUBSTANCE: invention relates to construction materials, in particular to heavy concretes and can be used for repairing and manufacturing construction components and structures, intended for protection against gamma-irradiation in construction of boxed, where gamma-therapeutic apparatuses for contact radiation therapy are placed. Raw material mixture for construction material obtaining includes Portland cement of grade not lower than M 500, superplasticiser, water, as course and fine filling agent - galenite with fractions 10-20 mm, 5-10 mm, 1.25-5 mm, 0.63-1.25 mm, 0.16-0.63 mm, with the following consumption of components, kg per concrete m³ : cement of grade not lower than M 500 - 610-650, coarse filling agent - galenite: fraction 10-20 mm - 1170-1460, fraction 5-10 mm - 1315-1750, fine filling agent - galenite: fraction 1.25-5 mm - 585-730, fraction 0.63-1.25 mm - 585-730, fraction 0.16-0.63 mm - 730-950, water - 165-180, superplasticiser, % of cement consumption 0.5-1.

EFFECT: increased density of construction material and improvement of its protective properties against gamma-radiation.

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