A low-pressure pouring method of steel bar rust inhibitor

Abstract

The invention discloses a low-pressure filling method for reinforcing steel bar corrosion inhibitor. The method is characterized in that low-pressure filling is performed through a low-pressure filling device and specifically includes the steps that a reinforced concrete structure is tested through a reinforcement corrosion instrument, so that a corroded part is found out; the surface of the corroded part of the reinforced concrete structure is subjected to sanding; the reinforcing steel bar corrosion inhibitor is prepared to form a reinforcing steel bar corrosion inhibitor saturated water solution; the low-pressure filling device is fixed to the surface of the corroded part after sanding; the reinforcing steel bar corrosion inhibitor saturated water solution is gradually injected into the reinforced concrete structure with the corroded part through the low-pressure filling device. The low-pressure filling method for the reinforcing steel bar corrosion inhibitor has the advantages that the seepage velocity and the seepage depth of the reinforcing steel bar corrosion inhibitor saturated water solution in the reinforced concrete structure can be improved by means of the low-pressure filling method; the operation is convenient, safe and simple; besides, the weather influence is small, the reinforcing steel bar corrosion inhibitor saturated water solution can not be scoured by rainwater even on rainy days, and the corrosion resistance effect is guaranteed; the surrounding is not polluted, and environmental protection is facilitated.

Description

technical field [0001] The invention relates to an anti-rust treatment method for reinforced concrete structures in the construction field, in particular to a low-pressure pouring method of a steel bar anti-rust agent. Background technique [0002] Premature failure of concrete structures caused by corrosion of steel bars has always been a hot issue that has been widely concerned in all countries in the world. There are many reasons for the corrosion of steel bars. In addition to the construction quality, the main reason is that the reinforced concrete structure is affected by the natural corrosion environment and the artificial corrosion environment during the service process. At present, for existing concrete structures that are corroding or in a corrosive environment, there are three main repair methods: electrochemical repair, concrete anti-corrosion coating and steel rust inhibitor: [0003] (1) Although electrochemical repair has effective protection, the cost is rela...

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Problems solved by technology

[0003] (1) Although electrochemical repair has effective protection, the cost is relatively high;

[0004] (2) Concrete anti-corrosion coating: For newly-built reinforced concrete structures, it can prevent moisture, chloride ions, and oxygen from further intruding into the concrete, which is beautiful and can prolong the service life of the structure, but for reinforced concrete structures that have been eroded by harmful ions, then It cannot inhibit the corrosion of steel bars by corrosive ions that have penetrated into the concrete;

[0005] (3) Brushing steel bar rust inhibitor: on the one hand, it can delay the start time of steel bar rusting, and on the other hand, it can slow down the development speed of steel bar corrosion. This method is simple, convenient and economical, and can well protect existing steel bars. Some structures, without damage to the structure, are a promising protection measure. However, at present, the steel rust inhibitor is basically applied directly on the surface of the reinforced concrete structure, allowing it to penetrate naturally, and its penetration speed is slow and difficult. The depth is shallow, and it is greatly affected by the weather. In case of rainy days, the steel rust inhibitor applied on the surface of the rigid concrete structure is easily diluted by rainwater, which greatly affects its anti-rust effect and will cause certain environmental pollution.

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