RESEARCH ON UTILIZATION OF FLYASH FOR BARRIER LAYER/BUFFER MATERIALS FOR RADIOACTIVE WASTE DISPOSAL

• Project/Area Number: 21760679
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Earth system and resources enginnering
• Research Institution: Kyushu University
• Principal Investigator: SASAOKA Takashi Kyushu University, 大学院・工学研究院, 助教 (20444862)
• Project Period (FY): 2009 – 2010
• Project Status: Completed (Fiscal Year 2010)
• Budget Amount: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000); Fiscal Year 2010: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2009: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
• Keywords: 資源開発 / 放射性廃棄物処分 / 石炭灰の有効利用 / pH測定 / イオン溶出 / カラム試験 / 浸透流・移流分散解析 / 放射性核種の移動 / 石炭灰の基礎物性 / 力学的特性 / 遮水性 / 膨潤特性 / 熱伝導特性

Research Abstract

A flyash-based barrier layer/cover system instead of bentonite-only one is proposed in this research. This paper describes the current system and technology for radioactive waste disposal and then proposes and discusses the applicability of flyash as a content of barrier layer/cover material based on the results of a series of laboratory tests and numerical analysis. The applicability of flyash to the contents of barrier layer/buffer for radioactive wastes was investigated in this research. From the results of a series of laboratory tests, it can be concluded that flyash has a great potential for use in them as the bentonite is substituted (substitution ratio : 30-40%).

Research Products

• [Journal Article] Study on utilization of flyash for barrier.layer/buffer materials for radioactive waste disposal (2010)
  • Author(s): Takashi Sasaoka, Hideki Shimada, Kikuo Matsui
  • Journal Title: Proceedings of International Conference of Mine Planning and Equipment Selection 2010 CD-ROM
• [Journal Article] Study on utilization of flyash for barrier.layer/buffer materials for radioactive waste disposal (2010)
  • Author(s): Takashi Sasaoka, et al
  • Journal Title: Proc.of Int.Conference of Mine Planning and Equipment Selection 2010 Volume: (CD-ROM)
  • Peer Reviewed
• [Journal Article] Consumption of Coal and Utilization of Coal Ash in Japan (2009)
  • Author(s): Yasuhiro Yoshida, Hideki Shimada, Takashi Sasaoka, Kikuo Matsui, Hideaki Nakagawa, Yoshiaki Sakai, Jan Gottfried
  • Journal Title: Proceedings of 13th Conference on Environm ent and Mineral Processing Vol.1 Pages: 291-301
• [Journal Article] Consumption of Coal and Utilization of Coal Ash in Japan (2009)
  • Author(s): Takashi Sasaoka, et al
  • Journal Title: Proc.of 13th Conference on Environment and Mineral Processing, Ostrava CZECH Vol.1 Pages: 291-301
  • Peer Reviewed
• [Presentation] Study on utilization of flyash for barrier.layer/buffer materials for radioactive waste disposal (2010)
  • Author(s): Takashi Sasaoka
  • Organizer: Mine Planning and Equipment Selection (MPES) Conference 2010
  • Place of Presentation: Fremantle, Australia
  • Year and Date: 2010-12-01
• [Presentation] Study on utilization of flyash for barrier.layer/buffer materials for radioactive waste disposal (2010)
  • Author(s): Takashi Sasaoka, Hideki Shimada, Kikuo Ma tsui
  • Organizer: International Conference of Mine Planning and Equipment Selection 2010(MPES2010)
  • Place of Presentation: Fremantle