[3A12-15] Concrete

[3A14] Radiation Effects on Concrete Materials for Aging management

(3)Volume swelling and radiation damage following Fe ion and electron irradiation

*FAN YANG¹, Kenta Murakami¹, Sho Kano¹, Muammar Hawary², Kiyoteru Suzuki³, Ippei Maruyama¹ (1. UTokyo, 2. Nagaoka Univ. of Tech., 3. MRI)

Keywords:Radiation-induced volume expansion, nanoindentation, X-ray diffraction, amorphization, flux effect, silicate minerals

To study the microscopic mechanism of radiation-induced volume expansion of concrete aggregate, 10 types of rocks, which simulate concrete aggregate in Japanese nuclear power plants, were irradiated at room temperature with 2.8 MeV Fe ions and 2 MeV electron, respectively. The volume expansion on the surface, instrumented indentation hardness, and radiation damage analyzed by X-ray diffraction and electron spic resonance spectroscopy will be reported.