Sodium Concrete Reaction — Structural Considerations

by George N. Freskakis, Burns & Roe Inc, Oradell, NJ, USA,

Document Type: Proceeding Paper

Part of: Structural Engineering in Nuclear Facilities


An overview of the sodium concrete reaction phenomenon, with emphasis on structural considerations, is presented. Available test results for limestone, basalt, and magnetite concrete with various test article configurations are reviewed. Generally, tests indicate reaction is self limiting before all sodium is used. Uncertainties, however, concerning the mechanism for penetration of sodium into concrete have resulted in different theories about a reaction model. Structural behavior may be significant in the progression of the reaction due to thermal-structural-chemical interactions involving tensile cracking, compressive crushing, or general deterioration of concrete and the exposure of fresh concrete surfaces to react with sodium. Structural behavior of test articles and potential factors that could enhance the progression of the reaction are discussed.

Subject Headings: Structural behavior | Material tests | Concrete structures | Structural analysis | Limestone | Magnetic fields | Uncertainty principles | Concrete construction

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