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http://dx.doi.org/10.7474/TUS.2011.21.4.264

Thermal-hydro-mechanical Properties of Reference Bentonite Buffer for a Korean HLW Repository  

Lee, Jae-Owan (한국원자력연구원 방사성폐기물 기술개발부)
Cho, Won-Jin (한국원자력연구원 방사성폐기물 기술개발부)
Kwon, Sang-Ki (인하대학교 에너지자원공학과)
Publication Information
Tunnel and Underground Space / v.21, no.4, 2011 , pp. 264-273 More about this Journal
Abstract
Bentonite buffer is one of the major components of an engineered barrier for an HLW (High-Level Waste) repository. The bentonite buffer is significantly exposed to the decay heat from radioactive wastes, the inflow of groundwater from the surrounding rock of the repository, and the high swelling pressure of densely-compacted bentonite that comes in contact with the groundwater. Therefore, it is essential to understand the THM (Thermal-Hydro-Mechanical) behavior of the bentonite buffer and to acquire the input data of its related constitutive models for the performance and safety assessment of an HLW repository. This paper analyzed the THM properties which have been obtained by conducting laboratory tests with a candidate buffer material for a Korean HLW repository. Moreover the formulation recipe of the reference bentonite buffer was defined on the basis of functional criteria, thus suggesting the THM properties which correspond to the formulation recipe of the reference bentonite buffer.
Keywords
Korean high-level waste repository; Buffer; Bentonite; Thermal-hydro-mechanical properties;
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Times Cited By KSCI : 1  (Citation Analysis)
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1 강철형, 구정의, 김성기, 김승수, 김진웅, 박정화, 이연명, 이재완, 전관식, 조원진, 최종원, 황용수, 권상기, 1999, 고준위폐기물처분기술개발: 심지층처분시스템개발. 한국 원자력연구원, KAERI/RR-2013/99, p. 519.
2 Lee, J.O. and Cho, W.J., 2005, Swelling pressures of an untreated and a Na-treated bentonite. 방사성폐기물학회, 춘계학술발표회.
3 Lee, J.O., Cho, W.J., Kwon, S., 2011, Suction and water uptake in unsaturated comapcted bentonite. Annals of Nuc. Energy, 38, pp. 520-526.   DOI   ScienceOn
4 Lee, J.O., Goh, E.O., Cho, W.J., Hyun, J.H., Chun, K.S., 1999, Water diffusion and resaturation of compacted bentonite. J. of Korean Solid Wastes Engineering Soc., Vol. 4(1), pp. 51-56.
5 JNC, 1999. H12 Project to establish technical basis for HLW disposal in Japan. Supporting Report 2, Japan Nuclear Cycle Development Institute, Japan.
6 Borgesson, L., Hokmark, H., and Karnland, O., 1988, Rheological properties of sodium smectite clay. SKB Technical Report 88-30.
7 Cho, W.J., Lee, J.O., Chun, K.S., and Park, H.S., 1999, Analysis of Functional Criteria for Buffer Material in a High-level Radioactive Waste Repository. J. of the Korean Nucl. Soc., Vol. 31, No. 1, pp. 116-132.
8 Fredlund, D.G., Rahardjo, H., 1993, Soil mechanics for unsaturated soils. John Wiley & Sons Inc., NY, pp. 517.
9 조원진, 이재완, 권상기, 2008, 압축벤토나이트 및 벤토나이트-모래 혼합물의 열전도도. 방사성폐기물학회지, Vol. 6(2), p. 101-109.
10 Knutsson, S., 1983, On the thermal conductivity and thermal diffusivity of highly compacted bentonite. SKR Technical Report 83-72.
11 조원진, 전관식, 이재완, 1999, 고준위폐기물처분장 완충 재용 국산 압축벤토나이트의 수리전도도에 미치는 건조밀도와 온도의 영향. 한국원자력연구원, KAERI/TR- 1223/99.
12 최희주, 이종열, 조동건, 김성기, 김승수, 김건영, 정종태, 이민수, 최종원, 이재완, 전관식, 김풍오, 2008, 한국형 고준위폐기물 처분시스템. 한국원자력연구원, KAERI/TR-3563/2008.