[2A14-17] Stabilization and Immobilization 2

[2A17] A geopolymer for solidification of radioactive waste

(10) Void structure and sorption partition coefficient of geopolymers after accelerated deterioration

*Eiki ADACHI¹, Nobuyuki SEKINE¹, Marcela Blazsekova², Maros Juraska², Milena Prazska² (1. Fuji electric, 2. Jacobs Slovakia)

Keywords:geopolymer, soundness, void structure, sorption partition coefficient

In order to estimate soundness of geopolymers (GP) after long-term exposure to water, we are trying to develop a method to accelerating GP deterioration. This time, we evaluated void structure and Sr sorption partition coefficient (K_d) of GP after hot water exposure. As a result, a correlation was found between void and K_d over a period corresponding to 2872 years. This indicates that it may be possible to estimate K_d by predicting the change in the amount of void in the GP.