COMPOSITE STRUCTURE OF GALVANIZED STEEL AND HYDRAULIC COMPOSITION

摘要

PROBLEM TO BE SOLVED: To provide a means, in a structure where a galvanized steel member is buried into a hydraulic composition such as concrete, for suppressing the progress of corrosion in the boundary part between the steel member and the hydraulic composition even in a strongly corrosive environment.

SOLUTION: When a galvanized steel member P is fixed with a hydraulic composition C, the hydraulic composition C which comprises hydraulic components containing 0 to 100 pts.mass alumina cement, 0 to 40 pts.mass portland cement and 0 to 80 pts.mass gypsum and the hydrogen ion exponent (pH) of which is regulated to≤12 is used. Preferably, the galvanized steel member P is beforehand provided with resin film layers including an organic acid having a chelating action each at least in the vicinity of the part near the matrix.

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