Interaction between Compacted Bentonite and Hardened Cement

Masahito SHIBATA; Hiroyuki SAKAMOTO; Tsutomu SATO

doi:10.3327/taesj.J10.015

Transactions of the Atomic Energy Society of Japan

Online ISSN : 2186-2931
Print ISSN : 1347-2879
ISSN-L : 1347-2879

Article

Interaction between Compacted Bentonite and Hardened Cement

Masahito SHIBATA, Hiroyuki SAKAMOTO, Tsutomu SATO

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Keywords: cement, compacted bentonite, interaction, secondary mineral, evaluation method, permeability test, dissolution, ion exchange, diffusion, alteration process

JOURNAL FREE ACCESS

2011 Volume 10 Issue 2 Pages 91-104

DOI https://doi.org/10.3327/taesj.J10.015

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Abstract

The interaction between compacted bentonite and hardened cement was evaluated. Cement-bentonite-cement-layered test specimens, after infiltrated with water, were subjected to various analyses. The EPMA analysis of the cross sections of the specimens indicated a homogeneous distribution of Ca leached from the cement paste in the bentonite. The quantity of Ca in the bentonite was apparently larger than the cation exchange capacity of the bentonite, suggesting the formation of secondary minerals involving Ca.

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