RADIATION RESISTANT CEMENT AND CONCRETE OF PROTECTIVE FACILITIES IN NUCLEAR ENERGY

PURPOSE:

The developed radiation-resistant binders can be used for the construction of biological protection against the action of hard radiation during the operation of nuclear power facilities.

TECHNICAL CHARACTERISTICS:

The materials obtained are characterized by high strength (50-60 MPa after 3 days of hardening), increased protective properties (coefficient of mass absorption of gamma radiation 250-280 cm2 / g, the macroscopic cross-section of thermal neutron capture is 2 orders of magnitude higher than similar indicators of traditional binding materials of protection), operating temperature up to 2000 ° C, loss of strength in the temperature range 100-1200 ° C up to 15%. After exposure to radiation with high-energy gamma quanta, the samples increased their strength by 20-30%, did not change their appearance and size, and no crevices were found.

RECOMMENDED FIELD OF APPLICATION:

Nuclear energy.

ADVANTAGES:

The proposed cements, in contrast to the materials used at present, can be used under conditions of simultaneous action of gamma radiation and elevated temperatures, ensuring the stability of the functioning of complex technological systems. Replacing the binders currently used in radiation-resistant concretes with the proposed unconventional cements will improve the performance properties of the protective materials (since in this case, the “shooting” through the binder in concrete will be excluded), as well as reduce the thickness of the layer of half attenuation of ionizing radiation by 1, 5-2 times.

TECHNICAL AND ECONOMIC EFFECT:

The projected volume of demand in the domestic market is more than 500 tons / year, the expected price of goods is UAH 5.0 thousand / ton, the plan for the expected sales of products is UAH 2500 thousand / year.

 

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