CN105601327A - Concrete structural member repairing and protection method - Google Patents
Concrete structural member repairing and protection method Download PDFInfo
- Publication number
- CN105601327A CN105601327A CN201610087426.4A CN201610087426A CN105601327A CN 105601327 A CN105601327 A CN 105601327A CN 201610087426 A CN201610087426 A CN 201610087426A CN 105601327 A CN105601327 A CN 105601327A
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- Prior art keywords
- concrete
- defence
- concrete structure
- repaired
- structure according
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/52—Multiple coating or impregnating multiple coating or impregnating with the same composition or with compositions only differing in the concentration of the constituents, is classified as single coating or impregnation
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Bridges Or Land Bridges (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
The invention discloses a concrete structural member repairing and protection method. The concrete structural member repairing and protection method specifically comprises the following steps that step one, concrete structural member surface decontamination comprises the sub-steps of (A) removing and fully clearing loose substance on a concrete basic surface, (B) removing sharp corner positions and performing grinding and leveling, (C) removing dust impurities and (D) using a solvent to remove contaminants; step two, an epoxy reinforcing adhesive is used for adhering and fixing a concrete structural member; step three, after the epoxy reinforcing adhesive is dried, foreign matter on the surface of an adhesive layer is removed, and then the epoxy reinforcing adhesive layer is coated with a layer of polyurethane intermediate paint; step four, after the polyurethane intermediate paint layer is dried, the operation of removing air bubbles of the paint layer is performed to remove foreign matter on the surface of the intermediate paint layer, and then the intermediate paint layer is coated with a layer of finishing coat. According to the concrete structural member repairing and protection method, damaged positions are not needed to be cleared and grinded to expose an undamaged concrete substrate, time and effort are saved, no dust exists basically during grinding, and the method is more beneficial to health of constructors.
Description
Technical field
The present invention relates to concrete protection technical field, be specifically related to a kind of concrete structure and repair means of defence.
Background technology
Xoncrete structure is the building structure of extensive use the most now. Because concrete structural surface often bears various load, and Service Environment is changeable, therefore there will be disease, need to repair. Existing to occurring that the concrete structure repairing of disease all requires disease position to clear up polishing to exposing intact cast concrete base, to cleaning polishing require highly, waste time and energy, and dust is large when polishing, unfavorable to workmen's health.
Summary of the invention
The present invention is exactly the deficiency for existing concrete structure repair scheme, provides a kind of concrete structure to repair means of defence, and the method is time saving and energy saving, and the simple environmental protection of work progress, is conducive to workmen's health.
Technical scheme of the present invention is as follows:
A kind of concrete structure is repaired means of defence, and the method is cleared up position to be repaired to exposing intact substrate without polishing, specifically comprises the steps:
Step 1, concrete structural surface are removed contamination, and comprise that following sub-step: A. removes the loose matter on concrete surface and cleans out; B. wedge angle position is rejected and polished flat; C. remove dust impurity; D. make solvent removal pollutant;
Step 2, use epoxy reinforcement glue bond fixing to concrete structure;
After step 3, epoxy reinforcement glue are done solid work, remove glue-line Superficial Foreign Body, then on epoxy reinforcement glue-line, apply one deck polyurethane intermediate coat;
After enamelled coating is done solid work in the middle of step 4, polyurethane, reject the operation of enamelled coating bubble, enamelled coating Superficial Foreign Body in the middle of removing then applies one deck finish paint on middle enamelled coating.
Preferably, while removing the loose matter on concrete surface in described step 1, adopt wire brush or emery wheel as instrument.
Preferably, while removing dust impurity in described step 1, adopt dust catcher or hair-dryer as instrument.
Preferably, the solvent using while clearing the pollution off in described step 1 is butyl acetate.
Preferably, the epoxy reinforcement glue using in described step 2 meets following performance indications: have permeability, can infiltrate through in concrete component; Reinforcement glue is done solid work adhesive force between rear and concrete surface and is greater than 2.5MPa.
Preferably, the main performance index of the polyurethane intermediate coat using in described step 3 is as follows: hot strength is greater than 10MPa, and elongation at break is greater than 100%, and-30 DEG C of low temperature flexibilities are less than 2mm, and film thickness is greater than 200 μ m.
Preferably, the finish paint in described step 4 can be polyurethane finish or fluorine carbon finishing paint.
More preferably, the main performance index of described polyurethane finish is as follows: hot strength is greater than 7MPa, and elongation at break is greater than 70%, and-30 DEG C of low temperature flexibilities are less than 2mm. Film thickness is greater than 100 μ m.
More preferably, the main performance index of described fluorine carbon finishing paint is as follows: hot strength is greater than 10MPa, and elongation at break is greater than 100%, and-30 DEG C of low temperature flexibilities are less than 2mm, and film thickness is greater than 100 μ m.
Preferably, after completing in steps, the total coating thickness including enamelled coating in the middle of epoxy reinforcement glue-line, polyurethane and top coat layer should be greater than 200 μ m, and adhesive force between coating and concrete surface should be greater than 2.5MPa.
Compared with prior art, concrete structure of the present invention is repaired means of defence without disease position clear up to polishing to exposing intact cast concrete base, time saving and energy saving, and dustlessization substantially while polishing, is more conducive to workmen's health.
Detailed description of the invention
Below in conjunction with detailed description of the invention, technical scheme of the present invention is clearly and completely described.
The invention provides a kind of concrete structure and repair means of defence, the method is cleared up position to be repaired to exposing intact substrate without polishing, specifically comprises the steps:
Step 1, concrete structural surface are removed contamination, and comprise that following sub-step: A. removes the loose matter on concrete surface and cleans out; B. wedge angle position is rejected and polished flat; C. remove dust impurity; D. make solvent removal pollutant.
Wherein, while removing the loose matter on concrete surface, adopt wire brush or emery wheel as instrument, this type of instrument uses simple and small volume, and it is all more convenient that installation is carried; The loose matter of indication comprises laitance, assorted slag etc. herein; While removing dust impurity, adopt dust catcher or hair-dryer as instrument; The solvent using while clearing the pollution off is butyl acetate.
Step 2, use epoxy reinforcement glue bond fixing to concrete structure. The epoxy reinforcement glue using should meet following performance indications: have permeability, can infiltrate through in concrete component; Epoxy reinforcement glue is done solid work adhesive force between rear and concrete surface should be greater than 2.5MPa.
After step 3, epoxy reinforcement glue are done solid work, remove glue-line Superficial Foreign Body, then on epoxy reinforcement glue-line, apply one deck polyurethane intermediate coat. Polyurethane intermediate coat should meet following performance indications: hot strength is greater than 10MPa, and elongation at break is greater than 100%, and-30 DEG C of low temperature flexibilities are less than 2mm, and film thickness is greater than 200 μ m.
After in the middle of step 4, polyurethane, enamelled coating is done solid work, check the thickness of intermediate coat and whether have bubble: need coating intermediate coat or finish paint construction in the time that thickness is not enough time, increasing consumption, guarantee overcoat gross thickness, this overcoat gross thickness should specifically be determined according to practice of construction environment; Should reject operation the coating intermediate coat of enamelled coating bubble if there is bubble. Then enamelled coating Superficial Foreign Body in the middle of removing then applies one deck finish paint on middle enamelled coating.
Finish paint can be polyurethane finish or fluorine carbon finishing paint, and these two kinds of finish paints are two kinds that in present concrete surface coating material, are most widely used. If select polyurethane finish, should meet following performance indications: hot strength is greater than 7MPa, elongation at break is greater than 70%, and-30 DEG C of low temperature flexibilities are less than 2mm. Film thickness is greater than 100 μ m; If select fluorine carbon finishing paint, should meet following performance indications: hot strength is greater than 10MPa, elongation at break is greater than 100%, and-30 DEG C of low temperature flexibilities are less than 2mm, and film thickness is greater than 100 μ m.
After completing, finish paint application should detect application gross thickness and adhesive force---and the total coating thickness including enamelled coating in the middle of epoxy reinforcement glue-line, polyurethane and top coat layer should be greater than 200 μ m, if thickness deficiency should coating finish paint; Adhesive force between total coating layer and concrete surface should be greater than 2.5MPa, if adhesive force deficiency need to be done over again.
Compared with prior art, concrete structure of the present invention is repaired means of defence without disease position clear up to polishing to exposing intact cast concrete base, time saving and energy saving, and dustlessization substantially while polishing, is more conducive to workmen's health.
Above embodiment is only the present invention's part embodiment, instead of whole embodiment. The explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof; For one of ordinary skill in the art, not making all other embodiment that obtain under creative work prerequisite, all belong to the scope of protection of the invention according to thought of the present invention. In sum, this description should not be construed as limitation of the present invention.
Claims (10)
1. concrete structure is repaired a means of defence, it is characterized in that, clears up position to be repaired to exposing intact substrate without polishing, repairs protection and comprises the steps:
Step 1, concrete structural surface are removed contamination, and comprise that following sub-step: A. removes the loose matter on concrete surface and cleans out; B. wedge angle position is rejected and polished flat; C. remove dust impurity; D. make solvent removal pollutant;
Step 2, use epoxy reinforcement glue bond fixing to concrete structure;
After step 3, epoxy reinforcement glue are done solid work, remove glue-line Superficial Foreign Body, then on epoxy reinforcement glue-line, apply one deck polyurethane intermediate coat;
After enamelled coating is done solid work in the middle of step 4, polyurethane, reject the operation of enamelled coating bubble, enamelled coating Superficial Foreign Body in the middle of removing then applies one deck finish paint on middle enamelled coating.
2. a kind of concrete structure according to claim 1 is repaired means of defence, it is characterized in that: while removing the loose matter on concrete surface in described step 1, adopt wire brush or emery wheel as instrument.
3. a kind of concrete structure according to claim 1 is repaired means of defence, it is characterized in that: while removing dust impurity in described step 1, adopt dust catcher or hair-dryer as instrument.
4. a kind of concrete structure according to claim 1 is repaired means of defence, it is characterized in that: the solvent using while clearing the pollution off in described step 1 is butyl acetate.
5. a kind of concrete structure according to claim 1 is repaired means of defence, it is characterized in that, the epoxy reinforcement glue using in described step 2 meets following performance indications: have permeability, can infiltrate through in concrete component; Reinforcement glue is done solid work adhesive force between rear and concrete surface should be greater than 2.5MPa.
6. a kind of concrete structure according to claim 1 is repaired means of defence, it is characterized in that, the main performance index of the polyurethane intermediate coat using in described step 3 is as follows: hot strength is greater than 10MPa, elongation at break is greater than 100%,-30 DEG C of low temperature flexibilities are less than 2mm, and film thickness is greater than 200 μ m.
7. a kind of concrete structure according to claim 1 is repaired means of defence, it is characterized in that: the finish paint in described step 4 can be polyurethane finish or fluorine carbon finishing paint.
8. a kind of concrete structure according to claim 7 is repaired means of defence, it is characterized in that, the main performance index of described polyurethane finish is as follows: hot strength is greater than 7MPa, and elongation at break is greater than 70%,-30 DEG C of low temperature flexibilities are less than 2mm, and film thickness is greater than 100 μ m.
9. a kind of concrete structure according to claim 7 is repaired means of defence, it is characterized in that, the main performance index of described fluorine carbon finishing paint is as follows: hot strength is greater than 10MPa, and elongation at break is greater than 100%,-30 DEG C of low temperature flexibilities are less than 2mm, and film thickness is greater than 100 μ m.
10. a kind of concrete structure according to claim 1 is repaired means of defence, it is characterized in that: after completing in steps, total coating thickness including enamelled coating in the middle of epoxy reinforcement glue-line, polyurethane and top coat layer should be greater than 200 μ m, and adhesive force between coating and concrete surface should be greater than 2.5MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610087426.4A CN105601327A (en) | 2016-02-17 | 2016-02-17 | Concrete structural member repairing and protection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610087426.4A CN105601327A (en) | 2016-02-17 | 2016-02-17 | Concrete structural member repairing and protection method |
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| Publication Number | Publication Date |
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| CN105601327A true CN105601327A (en) | 2016-05-25 |
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| CN201610087426.4A Pending CN105601327A (en) | 2016-02-17 | 2016-02-17 | Concrete structural member repairing and protection method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101172833A (en) * | 2007-10-25 | 2008-05-07 | 王力强 | Cement concrete surface renovating material |
| CN101876162A (en) * | 2009-04-30 | 2010-11-03 | 上海惠邦特种涂料有限公司 | Durability traceless repair method for road and bridge concrete, color difference trimming putty and trimming material |
| 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 |
| CN102553817A (en) * | 2010-12-30 | 2012-07-11 | 上海沪能防腐隔热工程技术有限公司 | Method for coating waterproof dope on surface of high-speed rail concrete |
| CN105114753A (en) * | 2015-07-22 | 2015-12-02 | 金阳升 | Pipe internal repair method without excavating ground |
-
2016
- 2016-02-17 CN CN201610087426.4A patent/CN105601327A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101172833A (en) * | 2007-10-25 | 2008-05-07 | 王力强 | Cement concrete surface renovating material |
| CN101876162A (en) * | 2009-04-30 | 2010-11-03 | 上海惠邦特种涂料有限公司 | Durability traceless repair method for road and bridge concrete, color difference trimming putty and trimming material |
| 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 |
| CN102553817A (en) * | 2010-12-30 | 2012-07-11 | 上海沪能防腐隔热工程技术有限公司 | Method for coating waterproof dope on surface of high-speed rail concrete |
| CN105114753A (en) * | 2015-07-22 | 2015-12-02 | 金阳升 | Pipe internal repair method without excavating ground |
Non-Patent Citations (2)
| Title |
|---|
| 潘继民主编: "《涂料实用手册》", 30 April 2014 * |
| 熊腊森编著: "《粘接手册》", 30 August 2008 * |
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Application publication date: 20160525 |