Method for assessing concrete structure durability life prolonged by concrete surface coating

Abstract

The invention relates to a method for assessing concrete structure durability life prolonged by a concrete surface coating. The method mainly comprises the following steps that 1, a concrete specimenis prepared, and maintenance is conducted; 2, after the specimen is subjected to surface dry, part of the specimen is covered with the concrete surface coating, and the other part of the specimen is not covered with concrete surface coatings; 3, after the coating is cured, the concrete specimen is placed in a chlorine salt environment for exposure; 4, after exposure is conducted for different ages, the specimen is taken out, chlorine ion depth distribution in a protection layer is measured, and a chlorine ion diffusion coefficient is calculated; 5, according to a Fick's second law, the concrete structure durability life prolonged by the concrete surface coating is assessed quantificationally. The method for assessing the concrete structure durability life prolonged by the concrete surfacecoating has the advantages that by means of the method, the concrete structure durability life prolonged by the concrete surface coating can be assessed quantificationally, the coating protection lifeis precisely designed, and the durability and the service safety of a concrete structure are guaranteed.

Description

technical field [0001] The invention relates to the field of durability and corrosion protection of concrete structures in marine environments, in particular to a method for quantitatively evaluating concrete surface coatings to prolong the durability life of concrete structures. Background technique [0002] Concrete surface coating can effectively isolate the intrusion of harmful media in the environment, and is the most commonly used additional anti-corrosion measure to improve concrete structures. The protective effect of coatings is the most concerned issue for engineering designers and builders. A lot of research has been done on the protective effect of coatings. The research results show that: coatings can effectively isolate the intrusion of harmful media in the environment. Durability of tall concrete structures. However, these studies are all qualitative and concluded that the coating has a good protective effect. It is not possible to quantitatively assess that...

AI Technical Summary

Problems solved by technology

However, from the background information of life365, coating anti-corrosion measures have more elements of empirical judgment on the quantifiable indicators of prolonging the durability life.

[0003] Domestic quantitative research on the extension of the durability life of concrete structures by coating anti-corrosion measures has not yet been reported. Although some current codes provide coating protection to extend the durability life of concrete structures, this parameter is only obtained based on experience. The value of , and there is no relevant research as support

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