Investigation of Heat Effect on the Shielding Properties of Some Local Concretes

Investigation of Heat Effect on the Shielding Properties of Some Local Concretes

The effect of heat on gamma ray and fast neutron shielding properties of two types of the local concretes (basalt concrete; ρ=2.2 g/cm³ and magnetite concrete; ρ=3.9 g/cm³) with two different water to cement ratios for both were investigated. The samples were exposed to temperatures between 20 to 300°C and 800°C.

Small losses in attenuation coefficients for gamma rays and fast neutrons were observed for the studied types of concretes. Investigations have been performed using a narrow beam of Cs-137 source and a collimated beam from ET-RR-1 reactor. A gamma spectrometer with NaI (Tl) detector and a neutron-gamma spectrometer with stilbene scintillator were used during measurements.