[1C08-10] Natural Barrier

[1C10] Evaluation of Migration Behavior of Colloids in the Natural Barrier around the waste facilities.

*Yosuke Akagi¹, Toshiyuki Nakazawa¹, Kohei Yamaguchi¹, Hisao Sato¹, Takumi Saito², Naoyuki Tamura³, Naoki Yoshii³, Takashi Kozawa³ (1. Mitsubishi Materials Corporation, 2. The university of Tokyo, 3. Japan Nuclear Fuel Limitd)

Keywords:Natural barrier, Pore structure, Colloids, Filtration effect

In order to evaluate the filtration effect of colloids in the natural barrier where around the low-level radioactive waste disposal facility, a colloids permeation experiments were carried out using polystyrene latex colloids and the rock sample prepared as not to disturb the pore structure. Based on the experimental results, colloids permeability is considered to be affected by the characteristics of rock pore structure.