sub-surface disposal site / cement system / gas migration test / gas migration / alkaline solutions / assumed chemical environments / hydrogen gas / chemical compositions / actual gas migration path / gas migration test results / gas migration tests / gas flow rate / cement system material / cement-bentonite composite specimen / extreme chemical conditions / gas migration mechanism / /
Project Subjects Low level Radio Active Waste Disposal Background and Objective A sub-surface disposal site constructed about 50∼100m underground is planned for low-level radioactive waste generated from the driving an