Japan Society of Civil Engineers 2026 Annual Meeting
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Session Details

Treatment and Disposal of Radioactive Waste and Radioactively Contaminated Waste

放射性廃棄物・放射性物質汚染廃棄物等の処理・処分（その3）

Thu. Sep 3, 2026 9:20 AM - 10:40 AM JST
Thu. Sep 3, 2026 12:20 AM - 1:40 AM UTC
Room 33, 3rd Floor, Building 3 (Hokkai-Gakuen University)
9:20 AM - 9:30 AM JST(12:20 AM - 12:30 AM UTC)

[CS12-17]Evaluation of the Effects of Various Analysis Conditions on the Analysis of Montmorillonite Swelling Using Molecular Dynamics Methods

*Hikaru Haneishi1, Yoshihito Yamamoto2 (1. Hosei University Graduated School of Engineering and Design, 2. Hosei University)
9:30 AM - 9:40 AM JST(12:30 AM - 12:40 AM UTC)

[CS12-18]Comparison of material properties using bentonite from different deposits as backfill material

*Hikaru Oguri1, Ayumu Ito1, Masakazu Chijimatsu1, Takayuki Abe2, Hirohito Kikuchi2, Kinji Yoshimoto2, Hirokazu Nagasawa2 (1. Hazama Ando Corporation, 2. RWMC)
9:40 AM - 9:50 AM JST(12:40 AM - 12:50 AM UTC)

[CS12-19]Observation of the density change process in bentonite material with different initial dry densities using X-ray CT

*Shun Kimura1, Masakazu Chijimatsu2, Ito Ayumu2 (1. Japan Atomic Energy Agency, 2. HAZAMA ANDO CORPORATION)
9:50 AM - 10:00 AM JST(12:50 AM - 1:00 AM UTC)

[CS12-20]Method for Controlling Bentonite Mixture Ratio Based on Fines Content Variations During Mixing

*Takeshi Tsukiyama1, Sekiguchi Takashi1, Hai Tran Thanh1 (1. TODA CORPORATION)
10:00 AM - 10:10 AM JST(1:00 AM - 1:10 AM UTC)

[CS12-21]Study on Base Material Particle Size Distribution for Reducing the hydraulic conductivity

*Hiroshi Tsuda1, Masayoshi Kuji1 (1. Maeda Corporation)
10:10 AM - 10:20 AM JST(1:10 AM - 1:20 AM UTC)

[CS12-22]Development of measurement technologies for backfill in geological disposal: Monitoring of block swelling process
-Verification of dry density distribution by dismantling and dividing after swelling-

*Hisayuki Watanabe1, Yohei Nakamichi1, Toshihiro Sakaki2, Hirokazu Fujii3, Takayuki Abe4, Ryo Yasuda4 (1. Obayashi Corporation, 2. ESE Consulting LLC, 3. LAZOC Incorporated, 4. Radioactive Waste Management Funding and Research Center)
10:20 AM - 10:30 AM JST(1:20 AM - 1:30 AM UTC)

[CS12-23]Changes in swelling pressure of bentonite due to temperature increase and decrease

*Tetta Hayami1, Yusuke Takayama1, Shinya Tachibana1 (1. Kobe University)
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