GB/T 46613-2025 Corrosion of metals and alloys—Test and evaluation for the corrosion of steel bar embedded in concrete structure exposed to total corrosion zones in marine environments

Scope

This document specifies the determination and evaluation methods for the rusting of steel reinforcement in concrete structures in the total corrosion zone of the marine environment, including test conditions, test facilities, materials and reagents, specimen preparation, test steps, test maintenance, and test reports.
This document is applicable to the testing and evaluation of steel reinforcement rusting in concrete structures under a chloride-dominated corrosion environment.
This document includes the following two methods for determining steel reinforcement rusting. When using these methods, select the appropriate one based on actual conditions.
Method A - Three-dimensional laser scanning method. The rusting state of the steel reinforcement is described by the changes in the cross-sectional area of the reinforcement before and after rusting.
Method B - Weight loss method. The rusting state of the steel reinforcement is described by the average weight loss rate before and after rusting.

Development Information

Referenced Standards

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