Anti-corrosion construction method of reinforced concrete structure
A reinforced concrete and construction method technology, applied in building structure, coating, construction, etc., can solve the problems of easy failure of anti-corrosion layer, difficult anti-corrosion layer spraying process, and large manpower and material resources, so as to save manpower and material resources and enhance protection Effect, the effect of improving anti-corrosion performance
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Embodiment 1
[0020] A kind of anticorrosion construction method of reinforced concrete structure according to the embodiment 1 of the present invention, comprises: firstly carry out pretreatment to concrete surface, described pretreatment comprises sand blasting treatment, then sprays waterproof primer layer, finally on waterproof primer layer Spray polyurea anti-corrosion layer;
[0021] The waterproof primer layer is prepared from the following raw materials in parts by weight: 8-12 parts of sodium tetraborate solution, 15-20 parts of sodium bentonite, 15-20 parts of polyvinyl alcohol, 15-20 parts of ash calcium powder, modified Sepiolite 5-10 parts, 4,4'-methylene bis(phenylisocyanate) 5-15 parts, dodecyl dimethyl betaine 3-5 parts, glyceryl stearate 3 parts -5 parts, 3-5 parts of zinc carbonate.
[0022] Preferably, the waterproof primer layer is prepared from raw materials comprising the following parts by weight: 10 parts of sodium tetraborate solution, 15 parts of sodium bentonite,...
Embodiment 2
[0025] In embodiment 2 of the present invention, in the pretreatment process that concrete surface is carried out, comprise blasting treatment, specifically, in sandblasting treatment, adopt 150-200 mesh carborundum, sandblasting pressure is 2-5MPa, and sandblasting distance is 10-20cm, and the sandblasting angle to the coating surface is 30°-45°.
[0026] A further preferred technical solution is to first carry out pickling treatment to the waterproof primer layer, and then spray the anticorrosion layer; the pickling treatment uses a high-pressure spray gun to carry out spray pickling treatment to the waterproof primer layer; wherein, by mass percentage concentration, The pickling solution includes 80%-90% hydrochloric acid, 10%-15% hydrofluoric acid, 2%-5% toluene sulfur and 0.5%-1.5% sustained release agent; wherein, the hydrochloric acid adopts a mass concentration of 30% hydrochloric acid; the hydrofluoric acid adopting mass concentration is 50% hydrofluoric acid.
Embodiment 3
[0028] In the above-mentioned construction methods of Example 1 and Example 2, operations such as pickling, coating spraying, and sandblasting are required, and there are many construction steps, which are completely manual, which is not only time-consuming and laborious, but also has operational errors, and the quality is not easy to control , therefore, the present invention also provides a kind of automatic displacement operation device to realize the automation in sand blasting treatment, pickling treatment and spraying; Figure 1 to Figure 2 As shown, the automatic displacement operating device includes a controller 1, a telescopic unit 2, a rotating unit 3 and a spray gun control base 4, and the controller 1 is respectively connected to the control end of the telescopic unit 2 and the control end of the rotating unit 3 The telescopic end 21 of the telescopic unit 2 is connected to the fixed end 32 of the rotary unit 3; the fixed end 22 of the telescopic unit 2 is fixedly ...
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