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Modified polyester antirust coating for construction steel bars and construction method for modified polyester antirust coating

A technology of modified polyester and anti-rust coatings, applied in the field of modified polyester anti-rust coatings for preventing steel bars from rusting on construction sites, can solve the problems of increasing the service life of buildings, low bonding force between steel bars and concrete, etc. The effect of improving the apparent quality and improving the integrity

Inactive Publication Date: 2012-02-01
扬州市航道管理处 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems of corrosion of steel bars and low grip between steel bars and concrete caused by the asynchronous erection of steel bars and concrete pouring in current construction projects involving reinforced concrete, the present invention provides A modified polyester antirust coating for building steel bars and a specific construction method of the modified polyester antirust coating on a construction site. The antirust coating and its construction method are mainly used in construction projects involving reinforced concrete. It can solve the problems of corrosion of steel bars and low grip between steel bars and concrete caused by the asynchronous erection of steel bars and concrete pouring in construction projects. It can also remove rust spots on the surface of steel bars, improve the appearance quality of reinforced concrete, and significantly improve the cast-in-place reinforced concrete. Improve the durability of reinforced concrete and the stability of the building, reduce the maintenance cost of the building during operation, and increase the service life of the building

Method used

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  • Modified polyester antirust coating for construction steel bars and construction method for modified polyester antirust coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 1. Weigh a certain amount of ordinary portland cement and silicon powder according to the ratio of mass ratio of 90:10, put them into a dry mixer, and stir for 3 minutes to make a mixture;

[0035] 2. Weigh the mixture, polymer polyester emulsion and water according to a certain mass ratio, wherein the mixture accounts for 30 parts of the total mass, the polymer polyester emulsion accounts for 35 parts of the total mass, and water accounts for 35 parts of the total mass .

[0036] 3. Put the weighed materials into the forced mixer and stir continuously for 4 minutes.

[0037] 4. Put the stirred modified polyester anti-rust coating slurry into a container (such as a soft leather bucket), use a wire brush to remove rust spots or other impurities on the surface of the steel bar, and then use a brush to remove the modified polyester anti-rust coating slurry Brush evenly on the steel bar, after the surface of the steel bar is covered with modified polyester anti-rust paint ...

Embodiment 2

[0039] 1. Weigh a certain amount of ordinary Portland cement and silica fume according to the mass ratio of 92:8, put them into a dry mixer, and stir for 3 minutes to make a mixture;

[0040] 2. Weigh the mixture, polymer polyester emulsion and water according to a certain mass ratio, wherein the mixture accounts for 40 parts of the total mass, the polymer polyester emulsion accounts for 25 parts of the total mass, and water accounts for 35 parts of the total mass .

[0041] 3. Put the weighed material into the forced mixer and stir continuously for 3 minutes.

[0042] 4. Put the stirred modified polyester anti-rust coating slurry into a container (such as a soft leather bucket), use a wire brush to remove rust spots or other impurities on the surface of the steel bar, and then use a brush to remove the modified polyester anti-rust coating slurry Brush evenly on the steel bars. After the surface of the steel bars is covered with the modified polyester anti-rust paint slurry, ...

Embodiment 3

[0044] 1. Weigh a certain amount of ordinary portland cement and silica fume according to the mass ratio of 85:15, put them into a dry mixer, and stir for 4 minutes to make a mixture;

[0045] 2. Weigh the mixture, polymer polyester emulsion and water according to a certain mass ratio, wherein the mixture accounts for 35 parts of the total mass, the polymer polyester emulsion accounts for 25 parts of the total mass, and water accounts for 40 parts of the total mass .

[0046] 3. Put the weighed material into the forced mixer and stir continuously for 3 minutes.

[0047] 4. Put the stirred modified polyester anti-rust coating slurry into a container (such as a soft leather bucket), use a wire brush to remove rust spots or other impurities on the surface of the steel bar, and then use a brush to remove the modified polyester anti-rust coating slurry Brush evenly on the steel bar, after the surface of the steel bar is covered with modified polyester anti-rust paint slurry, put it ...

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Abstract

The invention discloses a modified polyester antirust coating for construction steel bars and a construction method for the modified polyester antirust coating. The modified polyester antirust coating for the construction steel bars consists of a mixed material, polymer polyester emulsion and water in a mass part ratio of (30-50):(25-40):(25-45), wherein the mixed material consists of portland cement and silica powder in a mass part ratio of (80-100):(0-20). The construction method comprises the following steps of: (1) weighing common portland cement and silica powder, and uniformly stirring to obtain the mixed material; (2) weighing the mixed material, the polymer polyester emulsion and water in the mass ratio, and stirring for 3 to 5 minutes to obtain modified polyester antirust coating slurry for the construction steel bars; (3) uniformly coating the modified polyester antirust coating slurry on the outer surfaces of the construction steel bars; and (4) curing in a windproof and shade place, and using the construction steel bars for construction. The modified polyester antirust coating can prevent the steel bars from generating rusty spots when the steel bars are arranged in the field for 6 months, and can improve the bond stress between concrete and the steel bars by 15-35 percent.

Description

technical field [0001] The invention relates to a modified polyester antirust coating for building steel bars and a construction method thereof, in particular to a modified polyester antirust coating for preventing steel bar corrosion on construction sites and a specific construction method thereof. It is a modified polyester anti-rust coating which can prevent the corrosion of steel bars on the construction site, can remove rust, and increase the binding force of steel bars and concrete, and the specific construction method of the coating on the construction site. This kind of coating is mainly used in construction projects involving reinforced concrete such as water conservancy projects, water transportation projects, industrial and civil construction projects, and transportation projects. It can significantly improve the quality of cast-in-place reinforced concrete, improve the durability of reinforced concrete and the stability of buildings, increase the service life of bu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B111/26
Inventor 张燕迟夏正东刘曙明陈红旗孔繁龙钱文勋陈迅捷韦华
Owner 扬州市航道管理处
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