CORROSION RESISTANCE EVALUATION METHOD OF COATED STEEL PRODUCT, AND COMPOUND CORROSION RESISTANCE EVALUATION METHOD OF COATED STEEL PRODUCT

摘要

PROBLEM TO BE SOLVED: To provide a simple and accurate evaluation method of corrosion resistance of a coated steel product in an environment near a ground.;SOLUTION: The corrosion resistance evaluation method of the coated steel product tests the corrosion resistance of the coated steel product by immersing the coated steel product as an evaluation object for a predetermined time in a test solution with pH of 5.0-11.0 containing 0.02-2.0 mass% of ammonia and 0.1-2.0 mass% of metallic chloride in terms of chloride ion concentration. The accurate corrosion resistance of the coated steel product embedded partially in concrete or the ground and used can be evaluated simply and rapidly, and efficiency of development of an adequate corrosion resistant structure of the coated steel product can be improved.;COPYRIGHT: (C)2009,JPO&INPIT