Doped all organic corrosion inhibitor for steel bar in concrete

Abstract

The invention relates to the field of building materials, in particular to a doped all organic corrosion inhibitor for a steel bar in concrete. The corrosion inhibitor comprises the following components in percentage by weight: 5 to 30 percent of imidazoline derivative, 5 to 15 percent of organic alcohol, 0.3 to 1.5 percent of organic metal salt and 60 to 85 percent of water. During use, the corrosion inhibitor in recommended using amount is directly added into water to be dissolved and mixed, and the corresponding using amount of water when the concrete is poured is subtracted according to the proportion of the water in the components simultaneously; and the addition amount of the corrosion inhibitor is calculated in the amount of cement required by each cubic meter of concrete structure. The corrosion inhibitor can effectively reduce and slow down the corrosion of the steel bar in the concrete, reduces the damage of chloride ions to the surface passivation property of the steel bar so as to slow down the corrosion of the chloride ions to the steel bar, and can be widely applied to industrial and civil reinforced concrete buildings in offshore areas, harbors, wharfs and coastal areas.

Description

Technical field: [0001] The invention relates to the field of building materials, in particular to a blended all-organic concrete steel bar rust inhibitor. Background technique: [0002] Corrosion of reinforcement is a major cause of performance degradation and premature failure of concrete structures. Corrosion can not only cause huge economic losses, but also be related to issues such as safety, effective use of resources and environmental protection, and even bring negative impacts to society. According to statistics, in the United States alone in 2002, the corrosion loss related to reinforced concrete structures was as high as 70 billion U.S. dollars, and more than 50% of the 575,000 reinforced concrete bridges had corrosion problems of steel bars, and the annual maintenance cost for this was 20 billion U.S. dollars. Dollar. In Europe, the cost of repairing highways and beach buildings due to corrosion in 1996 was as high as 1 billion euros. In 2002, the Chinese Acade...

AI Technical Summary

Problems solved by technology

However, with the increasingly stringent environmental protection regulations and the continuous improvement of people's awareness of environmental protection, some rust inhibitors that are harmful to human health and pollute the environment have been banned in western developed countries.

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