2020 Annual Meeting

Presentation information

Oral presentation

V. Nuclear Fuel Cycle and Nuclear Materials » 505-1  Radioactive Waste Management

[2B08-11] Geopolymer 2 and Alkali Activated Material

Tue. Mar 17, 2020 2:45 PM - 3:50 PM Room B (Lecture Bildg. L 1F L-3)

Chair:Kazuyuki Takase(Nagaoka Univ. of Tech.)

2:45 PM - 3:00 PM

[2B08] Encapsulation of Cs and Sr in spent adsorbents by alkali activated materials

*Tsutomu Sato1, Natatsawas Soonthornwiphat1, Chaerun Raudhatul Islam1, Yutaro Kobayashi1, Kazuma Kuroda1, Kanako Toda1, Tsubasa Otake1, Yogarajah Elakneswaran1, John L. Provis2 (1. Hokkaido Univ., 2. The University of Sheffield)

Keywords:Spent adsorbent, Treatment, Disposal, Alkali activated material, Solidified waste

Leaching experiments were conducted for solidified wastes embedded zeolite and titanate with Cs and Sr. As results of the experiments, the leaching rates of Cs and Sr from potassium type alkali activated material were limited than that from ordinary Portland cement. The results suggest that potassium type alkali activated material are excellent candidate matrix for immobilization of radioactive waste containing Cs and Sr.