SOURCE MIX FOR PREPARING RADIATION-SHIELDING COMPOSITE MATERIAL AND FILLER FOR PREPARING SOURCE MIX (ALTERNATIVES) Russian patent published in 2001 - IPC

FIELD: preparation of concrete mixes and fillers for radiation shielding. SUBSTANCE: source mix contains in its composition cement and filler; the latter is titanium-magnetic ore having fraction size not over 0.1 mm at density of 3.3 to 3.6 g/cu. cm or 4.5 to 4.9 g/cu. cm. Proportion of mix components (mass percent) is as follows: cement 18 to 22%; filler 78 to 82%, or cement 78 to 82%; filler 18 to 22%. Filler incorporates in definite proportion of components. Concrete prepared from this mix is mainly used for radiation shielding of nuclear power plants and other nuclear plants and pieces of equipment. EFFECT: enhanced shielding capability of concrete against neutron- and gamma-rays; improved mechanical strength, water-tightness, diffusibility, reduced cost. 2 cl