書誌事項
- タイトル別名
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- Crack Formation in Cementitious Materials Used for an Engineering Barrier System and Their Impact on Hydraulic Conductivity from the Viewpoint of Performance Assessment of a TRU Waste Disposal System
- TRU ハイキブツ ショブン システム ノ セイノウ ヒョウカ ノ カンテン カラ ノ ジンコウ バリア ノ トウスイセイ ニ タイスル セメントケイ ザイリョウ ノ ヒビワレ ノ エイキョウ ニ カンスル ケントウ
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説明
The mechanical analysis code MACBECE2014 has been developed at the Japan Atomic Energy Agency (JAEA) to make realistic simulations of the physical integrity of the near field for performance assessment of the geological disposal of TRU waste in Japan. The MACBECE2014 code can be used to evaluate long-term changes in the mechanical behavior of the near field and any subsequent changes in the permeability of engineering barrier components, including crack formation in cementitious materials caused by expansion due to metal corrosion. Cracks in cementitious materials are likely to channel the flow of groundwater and so the represent preferred flow paths of any released radionuclides. Mechanical analysis was conducted using the MACBECE2014 code to investigate the concept of the TRU waste disposal system described in JAEA’s Second Progress TRU Report. Simulated results of a disposal system with a bentonite buffer demonstrated that the low permeability of the engineering barrier system could be maintained for long time periods because the physical integrity of the bentonite buffer remained intact even if cracks in the cementitious components had formed locally. Simulated results of the disposal system with a concrete backfill instead of a bentonite buffer showed that crack formation leads to a significant increase in the permeability of the engineering barrier system.
収録刊行物
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- 日本原子力学会和文論文誌
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日本原子力学会和文論文誌 15 (2), 97-114, 2015
一般社団法人 日本原子力学会
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詳細情報 詳細情報について
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- CRID
- 1390001205186731392
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- NII論文ID
- 130005151362
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- NII書誌ID
- AA11643165
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- ISSN
- 21862931
- 13472879
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- NDL書誌ID
- 027441659
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可