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)
Chair: Ema Yoshikawa
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)
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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)
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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)
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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)
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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)
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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)
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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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