Speaker
Dr
Ken-ichi Kimura
(Fujita Corporation)
Description
Radiation shielding is one of the important issue for accelerator facilities and nuclear power plants. It is also widely known that the radiation shielding induced the activation to the shielding materials. So, the activation is important to discuss. Especially concrete is widely used as the shielding material in the facilities because of its flexibility and inexpensively supplement, and the activation of concrete is one of the big problem because of the quantity.
Low activation concrete is one of the solution for the above problem and it is suitable to construct those facilities by low activation concrete, as well as to use it as shielding material. Several types of performance, beside of low activation, were required for the concrete, such as structural property, physical stress, workability and so on. So, various types of low activation concrete were developed for different performance. In this paper, the relationship between low activation performance and several physical properties are discussed for the developed 27 types low activation concrete.
In addition, the other solution for the reduction of activation is to use attached materials with neutron absorption material. Radiation shielding flexible material can contain large quantity of that material with flexibility and are introduced in this paper.
Primary author
Dr
Ken-ichi Kimura
(Fujita Corporation)
