고준위폐기물처분장 완충재물질로서 팽윤성 점토의 장기건전성과 주요 고려사항

Longevity Issues in Swelling Clay as a Buffer Material for a HLW Repository

Jae Owan Lee, Won Jin Cho

Abstract

A swelling clay should remain physically and chemically stable for a long time to perform its functions as a buffer material of a high-level waste (HLW) repository. The longevity issues in the swelling clay were reviewed to evaluate their importance in the performance of a repository. The review results suggest that an elevated temperature due to decay heat, groundwater chemistry, high pH environment by concrete, organic matter and microbes, radiation, and mechanical disturbance might significantly affect the long-term performance of a swelling clay as a buffer material. This paper will be used as basic informations to design the swelling clay buffer for a HLW repository.

Key Words : HLW repository, engineered barrier, buffer, swelling clay, long-term performance 고준위폐기물처분장, 공학적 방벽, 완충재, 팽윤성 점토, 장기건전성

Reference

JNFCWT

Online Submission

Korean Radioactive
Waste Society (KRS)

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