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Report No.

A Study on a microscopic state of Na-concrete reaction products

Kawaguchi, Munemichi*; Miyahara, Shinya; Uno, Masayoshi*

Though the steel liner is set up to prevent Na contacting with the concrete in the case of Na leakage in the Na-cooled fast reactor, it is important to grasp the Na-concrete reaction mechanism. The past studies have focused on the thermal, concrete ablation and hydrogen release behaviors. Also the natural termination of this reaction was confirmed experimentally; it was pointed out that the sedimentation of the reaction products was one of the terminating causes. This paper is reported on a discussion such as thermodynamics calculations of the reaction products, related with the Na-concrete reaction terminating study.



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