Abstract
The lithification of borosilicate glass powder containing simulated high level radioactive waste with the hot pressing technique under hydrothermal conditions was investigated. The glass powder was easily formed to hardened body with a little distilled water (5-10w/0). This glass body showed a high compressive strength above 2, 500 kg/cm2. The lithification occur-red at 240-270°C with the rapid shrinkage. The initial shrinkage kinetics were examined in consideration of the dissolution core model: 1-(1-x)1/3=kt1/2, 1-(1-x)1/3=k't, where x is the shrinkage ratio, k and k' the constants and t the reaction time. The apparent activation energy of shrinkage below 250°C was found to be about 20 kcal/mol, which was good agreement with that of the growth of surface reaction layer in hydrothermal solution. It was suggested that the initial stage of lithification followed the dissolution-deposition model.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of the Atomic Energy Society of Japan / Atomic Energy Society of Japan
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
