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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2021.5
- 수록면
- 1,511 - 1,518 (8page)
- DOI
- https://doi.org/10.1016/j.net.2020.10.012
이용수
초록· 키워드
오류제보하기
In most countries, the thermal criteria for the engineered barrier system (EBS) is set to below 100 C dueto the possible illitization in the buffer, which will likely be detrimental to the performance and safety ofthe repository. On the other hand, if the thermal criteria for the EBS increases, the disposal density andthe cost-effectiveness for the high-level radioactive wastes will dramatically increase. Thus, fundamentalson the thermal behavior of the buffer under the elevated temperatures is of crucial importance.
Yet, the behaviors at the elevated temperatures of the bentonite under groundwater-saturated conditionshave not been reported to-date. Here, we have developed an in-situ synchrotron-based method for thethermal behavior study of the buffer under the elevated temperatures (25e250 C), investigated dspacingsof the montmorillonite in the Korean bentonite (i.e., Ca-type) at dry and KURT (KAERI UndergroundResearch Tunnel) groundwater-saturated conditions (KJ-ii-dry and KJ-ii-wet), and compared thebehaviors with that of MX-80 (i.e., Na-type, MX-80-wet). The hydration states analyzed show tri-, bi-, andmono-hydrated at 25, 120, and 250 C, respectively for KJ-ii-wet, whereas tri-, mono-, and de-hydrated at25, 150, and 250 C, respectively for MX-80-wet. The Korean bentonite starts losing the interlayeredwater at lower temperatures; however, holds them better at higher temperatures as compared with MX-80.
목차
등록된 정보가 없습니다.
참고문헌 (23)
참고문헌 신청
R. C. Ewing / 2015 / Long-term storage of spent nuclear fuel / Nat. Mater 14(3):252~257
W. -L. Huang / 1993 / An experimentally derived kinetic model for a smectite-to-illite conversion and its use as a geothermometer / Clay Clay Miner 41:162~177
J. Cuadros / 1996 / Experimental kinetic study of the smectite-to-illite transformation / Geochem. Cosmochim. Acta 60:439~453
R. Mosser-Ruck / 1999 / Hydrothermal reactivity of K-smectite at 300C and 100 bar : dissolutionecrystallisation process and non-expandable dehydrated smectite formation / Clay Miner 34:275~290
K. Ikonen / 2005 / Thermal Condition of Open KBS-3H Tunnel
W. -L. Huang / 1993 / An experimentally derived kinetic model for a smectite-to-illite conversion and its use as a geothermometer / Clay Clay Miner 41:162~177
J. Cuadros / 1996 / Experimental kinetic study of the smectite-to-illite transformation / Geochem. Cosmochim. Acta 60:439~453
R. Mosser-Ruck / 1999 / Hydrothermal reactivity of K-smectite at 300C and 100 bar : dissolutionecrystallisation process and non-expandable dehydrated smectite formation / Clay Miner 34:275~290
K. Ikonen / 2005 / Thermal Condition of Open KBS-3H Tunnel
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