[2I08-13] Radiation Measurement 2

[2I13] Leaching of potassium and metakaolin based geopolymer and mechanical properties under electron irradiation

*Yaru Yang¹, Thi Mai Dung Do², Thi Chau Duyen Le⁴, Tadachika Nakayama¹, Gordon Thorogood³, Koichi Niihara¹, Hisayuki Suematsu¹ (1. Extreme Energy-Density Research Institute, Nagaoka University of Technology , 2. Department of Nuclear System Safety Engineering, Nagaoka University of Technology, 3. ANSTO, New Illawarra Rd, Lucas Heights, NSW, 2234, Australia , 4. Dandang University of Science and Technology,54 Nguyen Luong Bang, Lien Chieu, Danang City, Vietnam)

Keywords:Geopolymer, irradiation, ion- exchange, hardness, leaching

Geopolymers are inorganic polymers composed of AlO₄ and SiO₄ tetrahedral structural units and a three-dimensional network structure. The stability of geopolymer under irradiation is important. After the decommissioning of JMTR, the geopolymer treatment method for difficult waste ion exchange. In this research, the potassium and metakaolin-based geopolymer with different water content have been synthesized. The Vickers hardness will be measure before and after irradiated by ETIGO-Ⅲ at a peak voltage 2MeV, current 5kA and a pulse with of 100 ns at room temperature from one to four shots. The relative weight change was measured during curing, the result showed that higher water content relative weight decreases more, however not so much different (the range of relative weight decrease was from 10% to 14%). Leaching experiments will be used to detect the compaction of geopolymers for radioactive aluminum ions.