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Repairing and processing method for corrosion expansion type breakage of bridge member reinforcing bars

A treatment method and steel bar technology, which can be used in bridge maintenance, bridge construction, etc., can solve the problems of rapid aging and affect the treatment effect, and achieve the effects of good aging resistance, improved smoothing effect, and high bonding strength

Active Publication Date: 2017-02-08
河北省高速公路青银管理处
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional repair method for damaged bridges is to use epoxy resin series adhesives to coat and smooth the damaged parts. After counting the use effect for several years, it is found that the aging degree of epoxy resin materials is relatively fast, even after one year. There will be small "jumping lines", which seriously affects the treatment effect

Method used

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Embodiment Construction

[0023] Below in conjunction with embodiment the present invention is described in further detail:

[0024] This embodiment has set forth in detail the repairing treatment method for the damage of the steel bar of the bridge member, which is rusted and swelled. The method includes the following steps,

[0025] a) Clean up the damage, remove the skin on the surface of the concrete on the damaged part of rust and swelling, peel off the loose aggregate, and expose the rust and swelling steel bars. In this step, tools such as chisels and hand drills can be used for cleaning. Specifically, the loose parts are removed first, and then the flat concrete surface is roughened with tools to increase the bonding area and improve the bonding effect.

[0026] b) Derusting steel bars, first use a steel brush to remove the rust on the exposed steel bars, then use a brush to remove the rusted iron filings on the steel bars, and then use a high-pressure air gun to blow off the dust in the damage...

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Abstract

The invention discloses a repairing and processing method for corrosion expansion type breakage of bridge member reinforcing bars. The repairing and processing method comprises the following steps of cleaning breakages, removing corrosion on the reinforcing bars, performing interface spraying, coating mortar, performing rough screeding, coating a film, and performing fine screeding. According to the repairing and processing method disclosed by the invention, the polymer mortar is adopted to process the corrosion expansion type breakage of the bridge member reinforcing bars, and a film coating method is adopted for the screeding operation, so that a good effect is achieved; the purpose of quickly repairing the breakage of the bridge is realized, the screeding effect of repairing a damaged surface is improved, and the generation of secondary breakage is reduced.

Description

technical field [0001] The invention relates to the technical field of bridge repair, in particular to a method for repairing the rust and expansion of steel bars of bridge components. Background technique [0002] Qingyin Expressway (Hebei Section) started construction in April 2003, put into operation on December 28, 2005, and opened to traffic on March 26, 2006. As the management unit of the Hebei section of Qingyin Expressway, the Qingyin Management Office of Hebei Provincial Expressway is mainly responsible for the toll collection and maintenance of Qingyin Expressway (Hebei section), and the maintenance department is mainly responsible for daily maintenance and processing. [0003] With the increase of the service life of bridges in Qingyin Expressway, bridge damage caused by various reasons on bridges is also emerging, especially in recent years, there have been more local bridge damages caused by bridge reinforcement rust and swelling. The reason is related to the t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D22/00
CPCE01D22/00
Inventor 师慧王树信赵芳常军辉孙永张士英冯冲刘铁高燕胡连华张冲冲叶永迪尹学博何江静张楠王婧何舰李默杨英媛柴亚贾莎莎蔡玉文杨芳刘婷婷
Owner 河北省高速公路青银管理处
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