Swelling characteristics of bentonites in artificial seawater

Hideo Komine, Kazuya Yasuhara, Satoshi Murakami

Research output: Contribution to journalArticle

53 Citations (Scopus)

Abstract

Bentonite is currently designated for use as a buffer material for the repository of high-level radioactive waste because such a material requires swelling characteristics to seal the waste. A high-level radioactive waste disposal facility may be built in a coastal area of Japan because transportation of this waste by ships is feasible. Therefore, it is important to investigate the effects of seawater on a bentonite-based buffer. This study is intended to investigate the influence of sea- water on the swelling pressure and swelling deformation characteristics of five common types of bentonite. The experiments described herein clarify the relations between the influence of seawater grade and compaction density, type of exchangeable cation, montmorillonite content of the bentonite, and vertical pressure condition. Based on experimental results, suitable specifications have been defined for a bentonite-based buffer that can withstand the effects of seawater.

Original languageEnglish
Pages (from-to)177-189
Number of pages13
JournalCanadian Geotechnical Journal
Volume46
Issue number2
DOIs
Publication statusPublished - 2009 Feb
Externally publishedYes

Fingerprint

Bentonite
bentonite
Seawater
swelling
Swelling
seawater
radioactive waste
Radioactive waste disposal
Radioactive wastes
Clay minerals
montmorillonite
repository
waste disposal
Seals
compaction
Ships
Compaction
cation
Positive ions
Specifications

Keywords

  • Bentonite
  • Expansive soils
  • Montmorillonite
  • Radioactive waste disposal
  • Seawater
  • Swelling

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology

Cite this

Swelling characteristics of bentonites in artificial seawater. / Komine, Hideo; Yasuhara, Kazuya; Murakami, Satoshi.

In: Canadian Geotechnical Journal, Vol. 46, No. 2, 02.2009, p. 177-189.

Research output: Contribution to journalArticle

Komine, Hideo ; Yasuhara, Kazuya ; Murakami, Satoshi. / Swelling characteristics of bentonites in artificial seawater. In: Canadian Geotechnical Journal. 2009 ; Vol. 46, No. 2. pp. 177-189.
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