Method for measuring corrosion rate of steel structure in full-service life period

Abstract

The invention discloses a method for measuring a corrosion rate of a steel structure in a full-service life period. The method comprises the following steps of: (1) performing field nondestructive ultrasonic thickness measurement on at least one part of the steel structure to be evaluated when the steel structure to be evaluated begins to work; (2) selecting at least one steel structure hanging piece of which the material and structure are completely same as those of the steel structure to be evaluated, arranging the steel structure hanging piece on at least one typical part with severe predicated corrosion of the steel structure to be evaluated during an initial service period of the steel structure to be evaluated, performing part labeling on the steel structure hanging piece, performing ultrasonic thickness measurement on any one part of the steel structure hanging piece, performing ultrasonic measurement on an initial thickness value of a tested part, and recording the measured value as D'1'0; (3) measuring and calculating a corrosion rate of the steel structure hanging piece; and (4) measuring and calculating the corrosion rate of the steel structure to be evaluated. The measurement method provided by the invention can be used for accurately evaluating the corrosion state of each part of the steel structure in the full-service life period without damaging the steel structure.

Description

technical field [0001] The invention relates to a method for measuring the corrosion rate of a steel structure, in particular to a method for measuring the corrosion rate in the full service life cycle of the steel structure. Background technique [0002] The damage and deterioration of steel structures under the action of various atmospheric environments spreads across various fields, bringing economic losses to production and life. In particular, it is important to note that accidental or excessive corrosion often easily leads to various occurrences of steel structures. Accidents cause more serious direct losses and indirect losses, and even endanger life safety in severe cases. [0003] In view of the above situation, how to effectively grasp the corrosion rate information of the steel structure in the whole service life cycle, accurately judge the corrosion rate of the steel structure, and carry out targeted prevention or control measures scientifically and rationally is...

AI Technical Summary

Problems solved by technology

In the prior art, direct cutting and sampling analysis of the steel structure can accurately grasp the corrosion rate of the steel structure, but it will cause damage to the steel structure

In addition, linear polarization method, resistance method, coupon method, AC impedance method and other methods can be used to indirectly measure the corrosion rate of products or equipment, but it is difficult to accurately and comprehensively grasp the Actual corrosion status information of steel structures

For example, the commonly used ultrasonic thickness measurement method often results in small results due to the uneven corrosion surface and the corrosion layer is not removed

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