CN103375031A - Rust inhibition repairing method for rusted concrete structures - Google Patents

Rust inhibition repairing method for rusted concrete structures Download PDF

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Publication number
CN103375031A
CN103375031A CN 201210105391 CN201210105391A CN103375031A CN 103375031 A CN103375031 A CN 103375031A CN 201210105391 CN201210105391 CN 201210105391 CN 201210105391 A CN201210105391 A CN 201210105391A CN 103375031 A CN103375031 A CN 103375031A
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China
Prior art keywords
concrete
restoring area
section
corrosion inhibitor
rust
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Pending
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CN 201210105391
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Chinese (zh)
Inventor
惠云玲
郭小华
肖辉
王玲
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Central Research Institute of Building and Construction Co Ltd MCC Group
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Central Research Institute of Building and Construction Co Ltd MCC Group
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Priority to CN 201210105391 priority Critical patent/CN103375031A/en
Publication of CN103375031A publication Critical patent/CN103375031A/en
Pending legal-status Critical Current

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Abstract

The invention provides a rust inhibition repairing method for rusted concrete structures. According to the method, rust on the surface of rusting rebars is completely removed, damaged and rusted concrete is removed, further rusting of the rebars is prevented through rebar surface passivant, the break of the concrete and the surface of the repaired concrete structure are coated with shift rust inhibitor to prevent rust spreading, the whole rusted concrete structure is repaired according to physical factors, chemical factors, mechanical factors, electrochemical factors and the like of the concrete interface, and accordingly secondary rusting is avoided.

Description

The concrete structure that corrodes resistance rust restorative procedure
Technical field
The present invention relates to field of civil engineering, relate in particular to a kind of concrete structure resistance rust restorative procedure that corrodes.
Background technology
Corrosion of steel bar affects durability and the safety of steel reinforced concrete structure building.The main cause that causes corrosion is villaumite, and villaumite is on the one hand from concrete raw material, such as mixing water, extra large sand, anti-cryosel, salt fog and villaumite (or containing villaumite) Admixture etc.; On the other hand from environment for use; chlorion can see through concrete and arrive rebar surface; destroy the rebar surface oxide passivation film; when reinforcing bar runs into sodium chloride ion or sulfate ion erosion; reinforcing bar is corrosion and aging rapidly; after iron changes into iron rust; with the increase of volume, its volume can increase to 6 times of iron, causes concrete cover to expand with reinforcing bar and ftractures; play drum; peel off; reinforcing bar loses protection fully; and then the corrosion rate of reinforcing bar can be faster, and corrosion makes the reinforcing bar section impaired; reduce the mechanical property of reinforcing bar self; to being in the high strength wire under the high-stress state, corrosion susceptibility is higher especially, may occur to rupture suddenly and cause the accident; be with when corroding appears in the reinforced concrete structure of building, need to repair the concrete structure that corrodes.
In the prior art repairing of the concrete structure that corrodes is adopted usually the method for repairing and mending of " patch installing ", at first, cut corrosion of steel bar regional area concrete, and the loosening concrete of cleaning periphery; Then, the rebar surface that exposes is eliminated rust; At last, adopt mortar to repair.Because the method only adopts single method to carry out sectional repair to failure area, consequently repairing area continues corrosion, or not in succession corrosion of restoring area, causes the vicious circle of " damaging-repair-damage again-repair again ", does not reach the expection repairing effect.
Summary of the invention
Given this, the invention provides a kind of concrete structure resistance rust restorative procedure that corrodes, to solve existing restorative procedure the concrete structure reparation of corroding is being continued to produce the problem of corrosion afterwards.
The technological means that the present invention adopts is as follows: a kind of concrete structure resistance rust restorative procedure that corrodes comprises:
A, should carry out mark to the zone of needs reparation;
B, with in the repair coverage the reinforcing bar of corrosion expose fully, reject the concrete that has polluted or damage in the restoring area, carry out the dabbing processing to repairing district's concrete cross section;
C, should carry out cleaning surfaces to the concrete cross section of restoring area;
D, Corrosion Reinforcement is carried out processing of rust removing;
E, at the even brushing rebar surface passivator of the rebar surface that exposes;
F, on the concrete cross section of described restoring area brushing migration-type corrosion inhibitor;
G, after described migration-type corrosion inhibitor and rebar surface passivator drying, adopt clear water thoroughly wetting to the concrete cross section of restoring area, then spraying or brush concrete interface and process material;
H, adopt the mending mortar be mixed with corrosion inhibitor will remove the position to repair to original state;
I, after the reparation that comprises restoring area concrete structural surface brushing migration-type corrosion inhibitor;
J, the concrete structural surface of restoring area is carried out surface protection process.
Preferably, among the described step C, adopt water under high pressure to wash to described restoring area concrete cross section, and comprise on the described restoring area concrete cross section of removing because the erosion that chemical attack produces.
Preferably, among the described step I, described migration-type corrosion inhibitor brushing scope 30cm to restoring area.
Adopt restorative procedure of the present invention, by removing the iron rust of the rebar surface that corrodes fully, and with damaged and removed by the concrete that corrosion is corroded, then stop the further corrosion of reinforcing bar by rebar surface passivator, and the concrete structural surface coating migration-type corrosion inhibitor at concrete cross section and after repairing prevents the corrosion diffusion, in conjunction with character such as the physics of concrete interface, chemistry, mechanics, electrochemistry, the concrete structure that corrodes is carried out integral body reparation, reached the repairing effect of avoiding again corrosion.
Description of drawings
Fig. 1 is a kind of concrete structure resistance rust restorative procedure schematic flow sheet that corrodes of the present invention;
The specific embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated, be to be understood that, specific embodiment described herein only is used for explaining the present invention, is not intended to limit the present invention.
As shown in Figure 1, a kind of anticorrosion mortar anticorrosion performance method of testing typical process of the present invention comprises:
A, should carry out mark to the zone of needs reparation;
B, with in the repair coverage the reinforcing bar of corrosion expose fully, because the concrete after being polluted by corrosion of steel bar can continue to affect the reinforcing bar after the reparation, and concrete structure character after the concrete of damage can destroy and repair, so need to reject the concrete that has polluted or damaged in the restoring area, concrete structure after repairing with the concrete impact of avoiding damaging or polluting, for so that the concrete after repairing can be combined firmly on concrete cross section with former concrete structure, carry out dabbing and process repairing district's concrete cross section;
C, should carry out cleaning surfaces to the concrete cross section of restoring area, adopt water under high pressure to wash to the restoring area concrete cross section, and remove on the restoring area concrete cross section because the erosion that chemical attack produces, and then further remove reinforcing bar and corrode on repairing the impact of rear concrete structure;
D, Corrosion Reinforcement is carried out processing of rust removing;
E, at the even brushing rebar surface passivator of the rebar surface that exposes, again corrode in the rear generation of rust cleaning with the prevention reinforcing bar;
F, on the concrete cross section of restoring area brushing migration-type corrosion inhibitor, further the reinforcing bar in the concrete is played resistance rust effect;
After G, type corrosion inhibitor to be migrated and the rebar surface passivator drying, for mortar and the better combination of concrete cross section that makes follow-up repairing, adopt clear water thoroughly wetting to the concrete cross section of restoring area, then spraying or brushing concrete interface are processed material;
H, adopt the mending mortar be mixed with corrosion inhibitor will remove the position to repair to original state;
I, after the reparation that comprises restoring area concrete structural surface brushing migration-type corrosion inhibitor, brushing scope 30cm to the restoring area is subject to the again corrosion of impact of external factor with the reinforcing bar after preventing from repairing.
J, the concrete structural surface of restoring area carried out surface protection process, with strengthen repair after the durability of concrete structure.
Adopt restorative procedure of the present invention, by removing the iron rust of the rebar surface that corrodes fully, and with damaged and removed by the concrete that corrosion is corroded, then stop the further corrosion of reinforcing bar by rebar surface passivator, and the concrete structural surface coating migration-type corrosion inhibitor at concrete cross section and after repairing prevents the corrosion diffusion, in conjunction with character such as the physics of concrete interface, chemistry, mechanics, electrochemistry, the concrete structure that corrodes is carried out integral body reparation, reached the repairing effect of avoiding again corrosion.
The above only is preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of making, is equal to replacement, improvement etc., all should be included within the scope of protection of the invention.

Claims (3)

1. the concrete structure that corrodes hinders the rust restorative procedure, comprising:
A, should carry out mark to the zone of needs reparation;
B, with in the repair coverage the reinforcing bar of corrosion expose fully, reject the concrete that has polluted or damage in the restoring area, carry out the dabbing processing to repairing district's concrete cross section;
C, should carry out cleaning surfaces to the concrete cross section of restoring area;
D, Corrosion Reinforcement is carried out processing of rust removing;
E, at the even brushing rebar surface passivator of the rebar surface that exposes;
F, on the concrete cross section of described restoring area brushing migration-type corrosion inhibitor;
G, after corrosion inhibitor and rebar surface passivator drying, adopt clear water thoroughly wetting to the concrete cross section of restoring area, then spraying or brush the interface processing material;
H, adopt the mending mortar be mixed with corrosion inhibitor will remove the position to repair to original state;
I, comprising the concrete structural surface brushing migration-type corrosion inhibitor of restoring area;
J, the concrete structural surface of restoring area is carried out surface protection process.
2. method according to claim 1 is characterized in that, among the described step C, adopts water under high pressure to wash to described restoring area concrete cross section, and comprises on the described restoring area concrete cross section of removing because the erosion that chemical attack produces.
3. method according to claim 1 is characterized in that, among the described step I, and described migration-type corrosion inhibitor brushing scope 30cm to restoring area.
CN 201210105391 2012-04-11 2012-04-11 Rust inhibition repairing method for rusted concrete structures Pending CN103375031A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201210105391 CN103375031A (en) 2012-04-11 2012-04-11 Rust inhibition repairing method for rusted concrete structures

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201210105391 CN103375031A (en) 2012-04-11 2012-04-11 Rust inhibition repairing method for rusted concrete structures

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CN103375031A true CN103375031A (en) 2013-10-30

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103626418A (en) * 2013-12-11 2014-03-12 中国铁道科学研究院金属及化学研究所 Migrating type composite rebar corrosion inhibitor as well as preparation method and application thereof
CN104196260A (en) * 2014-09-02 2014-12-10 江苏省水利科学研究院 Method for repairing concrete beam through electric osmosis electromigration type corrosion inhibitor
CN105714693A (en) * 2016-02-03 2016-06-29 蓝海建设集团有限公司 Plate girder bridge strengthening method
CN106186968A (en) * 2016-06-29 2016-12-07 河南省交通科学技术研究院有限公司 A kind of reinforced concrete structures Damage of Corroded position repairing interfacial agents
CN106812334A (en) * 2016-12-16 2017-06-09 国家电网公司 Concrete framework reinforcement
CN115450144A (en) * 2022-09-21 2022-12-09 山东大学 Rusted concrete beam reinforcing method and structure
CN116044204A (en) * 2023-02-17 2023-05-02 中国矿业大学 Method for reinforcing concrete floor slab with seriously rusted steel bar

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103626418A (en) * 2013-12-11 2014-03-12 中国铁道科学研究院金属及化学研究所 Migrating type composite rebar corrosion inhibitor as well as preparation method and application thereof
CN104196260A (en) * 2014-09-02 2014-12-10 江苏省水利科学研究院 Method for repairing concrete beam through electric osmosis electromigration type corrosion inhibitor
CN105714693A (en) * 2016-02-03 2016-06-29 蓝海建设集团有限公司 Plate girder bridge strengthening method
CN106186968A (en) * 2016-06-29 2016-12-07 河南省交通科学技术研究院有限公司 A kind of reinforced concrete structures Damage of Corroded position repairing interfacial agents
CN106812334A (en) * 2016-12-16 2017-06-09 国家电网公司 Concrete framework reinforcement
CN115450144A (en) * 2022-09-21 2022-12-09 山东大学 Rusted concrete beam reinforcing method and structure
CN116044204A (en) * 2023-02-17 2023-05-02 中国矿业大学 Method for reinforcing concrete floor slab with seriously rusted steel bar

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Application publication date: 20131030