CN111809911A - Construction method for solving corrosion of reinforcing steel bars at bottom of frame beam - Google Patents
Construction method for solving corrosion of reinforcing steel bars at bottom of frame beam Download PDFInfo
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- CN111809911A CN111809911A CN202010671087.0A CN202010671087A CN111809911A CN 111809911 A CN111809911 A CN 111809911A CN 202010671087 A CN202010671087 A CN 202010671087A CN 111809911 A CN111809911 A CN 111809911A
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- layer
- carbon fiber
- frame beam
- fiber reinforced
- steel bars
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Rod-Shaped Construction Members (AREA)
Abstract
The invention relates to the field of beam bottom corrosion prevention, in particular to a construction method for solving the problem of corrosion of reinforcing steel bars at the bottom of a frame beam, which comprises the steps of grinding off a decorative layer at the bottom of the frame beam; removing rust of the corroded steel bar at the bottom of the frame beam; cleaning the bottom surface of the frame beam and the surface of the steel bar; coating an anti-rust layer on the surface of the steel bar; coating a first layer of carbon fiber reinforced glue on the bottom of the frame beam, then pasting carbon fiber cloth on the first layer of carbon fiber reinforced glue, coating a second layer of carbon fiber reinforced glue on the carbon fiber cloth, and then uniformly scattering medium sand on the second layer of carbon fiber reinforced glue; after the carbon fiber reinforced adhesive is solidified for the second time, a layer of cement mortar is smeared on the surface of the medium sand, and then an alkali-resistant fiber net spacer is pressed in; and finishing the construction of the frame beam ground decoration layer. The invention prevents air from directly contacting with the steel bars, prevents the steel bars from being corroded, prolongs the service life of the steel bars, and increases the safety of the structure of the steel box girder.
Description
Technical Field
The invention relates to the field of corrosion prevention of beam bottoms, in particular to a construction method for solving corrosion of reinforcing steel bars at the bottom of a frame beam.
Background
At the garage structure construction stage, the frame beam bottom is because the cushion sets up inadequately, leads to reinforcing bar protective layer thickness not enough. The garage is generally in the dark and humid environment in underground, if the reinforcing bar protective layer thickness does not satisfy the requirement, very easily arouse the corruption of reinforcing bar, lead to the frame beam bottom to appear the condition of returning rust, when the rust is very serious, can directly influence the life of garage.
When the garage frame beam is found to be rusted, the general treatment mode is to remove the decorative layer of the beam bottom, remove rust on the corroded steel bar, brush the rust-proof paint, smear a layer of cement mortar on the beam bottom, and then decorate the beam bottom. By adopting the method for maintenance, the problem that the steel bar is not rusted any more can be solved within a period of time, but the steel bar is easily rusted again after a long time, especially under the condition that the thickness of the anti-rust brush is not enough or the brush is not in place. If the corrosion is repeated several times, the diameter of the steel bar will be reduced, which has a great influence on the safety and durability of the structure.
Disclosure of Invention
In order to solve the technical problems, the invention provides a construction method for solving the problem of corrosion of reinforcing steel bars at the bottom of a frame beam, and aims to solve the problem of repeated rusting of the bottom of the frame beam and improve the safety and durability of a building structure.
The invention adopts the following technical scheme:
a construction method for solving the problem of corrosion of reinforcing steel bars at the bottom of a frame beam is carried out according to the following steps:
A. grinding off the decorative layer at the bottom of the frame beam;
B. removing rust of the corroded steel bar at the bottom of the frame beam;
C. cleaning the bottom surface of the frame beam and the surface of the steel bar;
D. coating an anti-rust layer on the surface of the steel bar;
E. coating a first layer of carbon fiber reinforced glue on the bottom of the frame beam, then pasting carbon fiber cloth on the first layer of carbon fiber reinforced glue, coating a second layer of carbon fiber reinforced glue on the carbon fiber cloth, and then uniformly scattering medium sand on the second layer of carbon fiber reinforced glue;
F. and after the carbon fiber reinforced adhesive is solidified for the second time, smearing a layer of cement mortar on the surface of the medium sand, and then pressing an alkali-resistant fiber net spacer.
G. And finishing the construction of the frame beam ground decoration layer.
Compared with the prior art, the invention has the beneficial effects that:
the carbon fiber reinforced adhesive is used for effectively preventing air from contacting with the steel bar, so that the steel bar is ensured to be corroded; the beam bottom is reinforced by carbon fibers, so that the problems of structural installation and durability caused by corrosion of reinforcing steel bars can be solved; and the carbon fiber reinforcement glue outside adheres to the middlings, has increased the frictional force at the bottom of the frame roof beam, and the bottom of the beam plastering layer can not drop, has prolonged the life of whole frame roof beam, once only solves the problem that frame roof beam bottom reinforcing bar corrodes repeatedly.
Drawings
FIG. 1 is a schematic structural view of the present invention;
in the figure: a frame beam bottom 1; a carbon fiber cloth 2; 3, medium sand; cement mortar 4; and a decorative layer 5.
Detailed Description
The invention is further described below with reference to the accompanying drawings and specific embodiments.
A construction method for solving the problem of corrosion of reinforcing steel bars at the bottom of a frame beam is carried out according to the following steps:
A. the original decorative layer of the frame bottom 1 is ground off.
B. And removing rust of the corroded steel bars of the frame beam bottom 1.
C. And cleaning the surface of the frame beam bottom 1 and the surface of the steel bar by using an air compressor.
D. And (4) uniformly coating an anti-rust layer on the surface of the steel bar.
E. After the antirust layer on the surface of the reinforcing steel bar is aired, the first carbon fiber reinforced adhesive layer is coated on the whole of the frame beam bottom 1, then the carbon fiber cloth 2 is pasted on the first carbon fiber reinforced adhesive layer, the second carbon fiber reinforced adhesive layer is coated on the outer side of the carbon fiber cloth 2, and then the medium sand 3 is uniformly scattered on the second carbon fiber reinforced adhesive layer.
F. And after the carbon fiber reinforced adhesive is solidified for the second time, smearing a layer of cement mortar 4 on the surface of the medium sand, and then pressing in the alkali-resistant fiber mesh cloth.
G. The bottom surface of the frame beam bottom 1 is provided with a decorative layer 5.
Adopt carbon cloth 2 to consolidate on the frame beam bottom 1 reinforcing bar, save space, the construction is simple and convenient moreover, does not need on-the-spot fixed facilities, and construction quality guarantees easily, need not increase structure size, quality basically, and corrosion-resistant, durability are good, improve the life of building, have also reduced the reinforcement cost.
The above description is only for the specific embodiment of the present invention, but the protection of the present invention is not limited thereto, and all equivalent changes or substitutions to the technical features of the present invention that can be made by those skilled in the art are included in the protection scope of the present invention.
Claims (1)
1. A construction method for solving the problem of corrosion of reinforcing steel bars at the bottom of a frame beam is characterized by comprising the following steps of:
A. grinding off the decorative layer at the bottom of the frame beam;
B. removing rust of the corroded steel bar at the bottom of the frame beam;
C. cleaning the bottom surface of the frame beam and the surface of the steel bar;
D. coating an anti-rust layer on the surface of the steel bar;
E. coating a first layer of carbon fiber reinforced glue on the bottom of the frame beam, then pasting carbon fiber cloth on the first layer of carbon fiber reinforced glue, coating a second layer of carbon fiber reinforced glue on the carbon fiber cloth, and then uniformly scattering medium sand on the second layer of carbon fiber reinforced glue;
F. after the carbon fiber reinforced adhesive is solidified for the second time, a layer of cement mortar is smeared on the surface of the medium sand, and then an alkali-resistant fiber net spacer is pressed in;
G. and finishing the construction of the frame beam ground decoration layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010671087.0A CN111809911A (en) | 2020-07-13 | 2020-07-13 | Construction method for solving corrosion of reinforcing steel bars at bottom of frame beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010671087.0A CN111809911A (en) | 2020-07-13 | 2020-07-13 | Construction method for solving corrosion of reinforcing steel bars at bottom of frame beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111809911A true CN111809911A (en) | 2020-10-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010671087.0A Withdrawn CN111809911A (en) | 2020-07-13 | 2020-07-13 | Construction method for solving corrosion of reinforcing steel bars at bottom of frame beam |
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| CN (1) | CN111809911A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102220813A (en) * | 2010-04-14 | 2011-10-19 | 上海法赫桥梁隧道养护工程技术有限公司 | Concrete maintenance and reinforcement treatment method |
| CN103643804A (en) * | 2013-11-25 | 2014-03-19 | 昆明理工大学 | Corroded reinforced concrete beam repairing and strengthening method based on arch effect |
| CN205134741U (en) * | 2015-11-16 | 2016-04-06 | 重庆大学 | Concrete column through surface texture reinforcing |
| CN106703436A (en) * | 2017-03-13 | 2017-05-24 | 钦州学院 | Carbon fiber sheet strengthened concrete structure |
| CN109595008A (en) * | 2018-08-15 | 2019-04-09 | 福建陆海工程勘察设计有限公司 | A kind of restorative procedure of Tunnel Second Lining concrete dew muscle |
| CN110952996A (en) * | 2019-09-16 | 2020-04-03 | 北京工业大学 | Method and material for reinforcing electric power tunnel by fiber grid reinforced polymer mortar |
-
2020
- 2020-07-13 CN CN202010671087.0A patent/CN111809911A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102220813A (en) * | 2010-04-14 | 2011-10-19 | 上海法赫桥梁隧道养护工程技术有限公司 | Concrete maintenance and reinforcement treatment method |
| CN103643804A (en) * | 2013-11-25 | 2014-03-19 | 昆明理工大学 | Corroded reinforced concrete beam repairing and strengthening method based on arch effect |
| CN205134741U (en) * | 2015-11-16 | 2016-04-06 | 重庆大学 | Concrete column through surface texture reinforcing |
| CN106703436A (en) * | 2017-03-13 | 2017-05-24 | 钦州学院 | Carbon fiber sheet strengthened concrete structure |
| CN109595008A (en) * | 2018-08-15 | 2019-04-09 | 福建陆海工程勘察设计有限公司 | A kind of restorative procedure of Tunnel Second Lining concrete dew muscle |
| CN110952996A (en) * | 2019-09-16 | 2020-04-03 | 北京工业大学 | Method and material for reinforcing electric power tunnel by fiber grid reinforced polymer mortar |
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Application publication date: 20201023 |