[2L06-09] Bentonite

[2L07] Mesoscopic structures of compacted bentonite studied by small-angle X-ray scattering

*Takumi Saito¹, Natsuki Nagai², Ryuhei Motokawa³, Hitoshi Endo⁴ (1. Nuclear Professional School, School of Engineering, The University of Tokyo, 2. Department of Systems Innovation, Faculty of Engineering, The University of Tokyo, 3. Material Science Research Center, Japan Atomic Energy Agency, 4. Neutron Science Division, Institute of Material Structure Science, High Energy Accelerator Research Organization)

Keywords:compacted bentonite, mesoscopic structure, small-angle X-ray scattering

Bentonite is an important element of engineered barriers implemented for geological disposal of high-level wastes. In this study, we present the structures of compacted bentonite in nm to sub-μm ranges, which can never be probed by X-ray diffraction, using synchrotron-based small-angle X-ray scattering.