CN102553817A - Method for coating waterproof dope on surface of high-speed rail concrete - Google Patents
Method for coating waterproof dope on surface of high-speed rail concrete Download PDFInfo
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- CN102553817A CN102553817A CN2010106144291A CN201010614429A CN102553817A CN 102553817 A CN102553817 A CN 102553817A CN 2010106144291 A CN2010106144291 A CN 2010106144291A CN 201010614429 A CN201010614429 A CN 201010614429A CN 102553817 A CN102553817 A CN 102553817A
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Abstract
The invention relates to a method for coating a waterproof dope on the surface of high-speed rail concrete. The method comprises the following steps of: treating the surface of the high-speed rail concrete; removing contaminants from the surface of the concrete; controlling the flatness and the roughness of the surface of the concrete to be SP3 to SP5; and spraying a primer, a polyurea waterproof dope and an aliphatic polyurethane finish onto the treated surface of the concrete. Compared with the prior art, the method is simple in operation; and the waterproof dope is sprayed onto the surface of the high-speed rail concrete, and the three layers of dopes can well protect the concrete and fulfill the aim of preventing water and corrosion, so the service life of the high-speed rail concrete is prolonged.
Description
Technical field
The present invention relates to a kind of paint spraying method of concrete surface, especially relate to a kind of water-repellent paint coating process of high ferro concrete surface.
Background technology
The erosion of rainwater, rainwater shows as the destruction of alkaline environment in the rain penetration initiation concrete, calcareous loss to the corrosiveness of bridge, will definitely cause the concrete corrosion, and reinforcing bar gets rusty, and intensity reduces, and finally causes the reduction in the service life of bridge.
Groping and, on highway bridge still is railroad bridge construction, all formulated the correlation technique standards and norms of the performance requirement of relevant waterproof material own for many years with reference to foreign experience; Also the clean-up performance of waterproof matrix surface requirements is described simultaneously, its common characteristic is that the requirement floorings will not have laitance, free from dust before carrying out the water-repellent paint construction, but in these standards for the technology of constructing and the requirement shorter mention of method.Particularly at present in the bridge waterproof to the surface treatment link of bridge basal plane; Nearly all material producer and owner have recognized that the result of basal plane directly has influence on the quality of whole waterproof system, but never really find equipment and the worker's method that is fit to the bridge floor base treatment.
Summary of the invention
The object of the invention is exactly the water-repellent paint coating process that a kind of simple to operate, high ferro concrete surface of improving concrete service life is provided in order to overcome the defective that above-mentioned prior art exists.
The object of the invention can be realized through following technical scheme:
A kind of water-repellent paint coating process of high ferro concrete surface is characterized in that, this method may further comprise the steps:
(1) the concrete surface of high ferro is handled, remove the pollutant of concrete surface, control concrete surface flatness and roughness should reach SP3～SP5, then the spraying of the concrete surface after handling one deck priming paint;
(2) to the concrete surface spray polyurea waterproofing coating that has sprayed priming paint;
(3) to the concrete surface spraying aliphatic polyurethane finish paint that has sprayed polyurea waterproof coating material.
Surface treatment described in the step (1) adopts 200 order quartz sands and priming paint by weight scraping at concrete surface for mixing to criticize with 1: 1; The control flatness reaches 3mm/4m or 2mm/1m; Roughness meets SP3～SP5 requirement, and pollutant comprises surperficial laitance, discrete particles or greasy dirt.
Priming paint described in the step (1) is epoxy resin or polyurethane, and temperature is higher than 10 ℃ and adopts epoxy resin or polyurethane as priming paint, and temperature is lower than 10 ℃ and adopts polyurethane as priming paint.
The quantity for spray of the priming paint described in the step (1) is that every square metre of concrete is not less than 0.4kg.
Polyurea waterproof coating material described in the step (2) adopts the polyureas spray equipment to spray, and polyurea waterproof coating material is accomplished spraying in the 48h that accomplishes the priming paint spraying.
The thickness of the polyurea waterproof coating material described in the step (2) is more than or equal to 2mm.
The thickness of the aliphatic polyurethane finish paint described in the step (3) is more than or equal to 200 microns.
Aliphatic polyurethane finish paint described in the step (3) is accomplished spraying in the 6h that accomplishes spray polyurea waterproofing coating.
Compared with prior art; The present invention is simple to operate, and through this method water-repellent paint in the spraying of high ferro concrete surface, the dope layer of this three-decker can play a very good protection to concrete; Reach waterproof, erosion-resisting purpose, use concrete service life thereby increase high ferro.
The specific embodiment
Below in conjunction with specific embodiment the present invention is elaborated.
Embodiment
A kind of water-repellent paint coating process of high ferro concrete surface, this method may further comprise the steps:
(1) the concrete surface of high ferro is handled; Adopt 200 order quartz sands and priming paint by weight scraping at concrete surface for mixing to criticize with 1: 1; The concrete surface degree of roughness is handled to meeting SP3～SP5 requirement; Remove the pollutants such as surperficial laitance, discrete particles or greasy dirt of concrete surface, control concrete surface flatness reaches 3mm/4m or 2mm/1m; The concrete bridge deck quality should satisfy " passenger dedicated railway line construction of bridge and culvert inspection of quality tentative standard " or designing requirement, control moisture content≤6%.Concrete surface after handling sprays one deck priming paint then; The priming paint that uses is epoxy resin, polyurethane or its modified product; Quantity for spray is that every square metre of concrete is not less than 0.4kg, primary coat as bonding concrete base layer and polyurea coating, moisture, pore and correction substrate surface tiny flaw that good penetration power can closed concrete basic unit should be arranged; Simultaneously can good cementation be arranged with concrete base layer and polyurea coating; Primary coat and basic unit and polyurea coating cohesive force be strong, to lacking concrete sheath coat penetration height, closure better function, hardening time; Can in 0-50 ℃ of scope, normally solidify; Temperature is higher than 10 ℃ and adopts epoxy resin or polyurethane as priming paint, and temperature is lower than 10 ℃ and adopts polyurethane as priming paint, and keeps the moistening of sprayed surface;
(2) to the concrete surface spray polyurea waterproofing coating that has sprayed priming paint; The polyurea waterproof coating material that the polyurea waterproof coating material that uses is produced as the zhuzhou,hunan chemical plant; Mixture for semi-prepolymer and resin chain extender; Semi-prepolymer is the semi-prepolymer that terminal hydroxy group compound and isocyanate reaction make, and the resin chain extender is that above-mentioned two kinds of components are mixed ejection in the spray gun of spraying device special by terminal hydroxy group resin or end amino resins and the mixture of holding amino chain extender to form; Generation elastic body water-proof film is solidified in fast reaction; Spraying polyurethane (urea) water-repellent paint only is suitable for the construction in drying, the warm environment, and temperature should be at 10-35 ℃, relative humidity below 85% during construction, and operating environment relative humidity is 82～83%.Polyurea waterproof coating material need be accomplished spraying in the 48h that accomplishes the priming paint spraying, resulting polyurea waterproof coating material layer is measured thickness >=2mm with sonigauge, or crosses on-the-spot irony model sampling magnetic thickness tester at present and detect;
(3) be coated with to the concrete surface spraying aliphatic polyurethane face that has sprayed polyurea waterproof coating material; Face is coated with brushes more than twice, and the per pass build is not less than 50 microns, and gross thickness is greater than 200 microns; The aliphatic polyurethane finish paint is accomplished spraying in the 6h that accomplishes spray polyurea waterproofing coating; Guarantee good bonding between finishing coat and the polyurea water-proof layer, the aliphatic polyurethane surface layer should be chosen other colors except that black, grey in should using.When watertight composition carries out lapping construction, when twice engineering time surpasses six hours at interval, also should adopt the bonding materials at two layers of a kind of solvent borne polyurethane class adhesive that increases cohesive force between polyurea layer.
Claims (8)
1. the water-repellent paint coating process of a high ferro concrete surface is characterized in that, this method may further comprise the steps:
(1) the concrete surface of high ferro is handled, remove the pollutant of concrete surface, control concrete surface flatness and roughness should reach SP3～SP5, then the spraying of the concrete surface after handling one deck priming paint;
(2) to the concrete surface spray polyurea waterproofing coating that has sprayed priming paint;
(3) to the concrete surface spraying aliphatic polyurethane finish paint that has sprayed polyurea waterproof coating material.
2. the water-repellent paint coating process of a kind of high ferro concrete surface according to claim 1; It is characterized in that; Surface treatment described in the step (1) adopts 200 order quartz sands and priming paint by weight scraping at concrete surface for mixing to criticize with 1: 1; The control flatness reaches 3mm/4m or 2mm/1m, and roughness meets SP3～SP5 requirement, and pollutant comprises surperficial laitance, discrete particles or greasy dirt.
3. the water-repellent paint coating process of a kind of high ferro concrete surface according to claim 1; It is characterized in that; Priming paint described in the step (1) is epoxy resin or polyurethane; Temperature is higher than 10 ℃ and adopts epoxy resin or polyurethane as priming paint, and temperature is lower than 10 ℃ and adopts polyurethane as priming paint.
4. the water-repellent paint coating process of a kind of high ferro concrete surface according to claim 1 is characterized in that, the quantity for spray of the priming paint described in the step (1) is that every square metre of concrete is not less than 0.4kg.
5. the water-repellent paint coating process of a kind of high ferro concrete surface according to claim 1; It is characterized in that; Polyurea waterproof coating material described in the step (2) adopts the polyureas spray equipment to spray, and polyurea waterproof coating material is accomplished spraying in the 48h that accomplishes the priming paint spraying.
6. the water-repellent paint coating process of a kind of high ferro concrete surface according to claim 1 is characterized in that, the thickness of the polyurea waterproof coating material described in the step (2) is more than or equal to 2mm.
7. the water-repellent paint coating process of a kind of high ferro concrete surface according to claim 1 is characterized in that, the thickness of the aliphatic polyurethane finish paint described in the step (3) is more than or equal to 200 microns.
8. the water-repellent paint coating process of a kind of high ferro concrete surface according to claim 1 is characterized in that, the aliphatic polyurethane finish paint described in the step (3) is accomplished spraying in the 6h that accomplishes spray polyurea waterproofing coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106144291A CN102553817A (en) | 2010-12-30 | 2010-12-30 | Method for coating waterproof dope on surface of high-speed rail concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106144291A CN102553817A (en) | 2010-12-30 | 2010-12-30 | Method for coating waterproof dope on surface of high-speed rail concrete |
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| CN102553817A true CN102553817A (en) | 2012-07-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010106144291A Pending CN102553817A (en) | 2010-12-30 | 2010-12-30 | Method for coating waterproof dope on surface of high-speed rail concrete |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105601327A (en) * | 2016-02-17 | 2016-05-25 | 安徽万诚达新型材料有限公司 | Concrete structural member repairing and protection method |
| CN106243972A (en) * | 2016-07-29 | 2016-12-21 | 上海基典防水科技有限公司 | A kind of high ferro concrete water-proof construction method |
| CN106320176A (en) * | 2016-08-11 | 2017-01-11 | 王斐芬 | Waterproof construction method of high-speed rail concrete |
| CN108002863A (en) * | 2017-12-08 | 2018-05-08 | 中建西部建设湖南有限公司 | A kind of method to the super-hydrophobic processing of concrete surface |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1292307A (en) * | 1999-10-11 | 2001-04-25 | 国都化学株式会社 | Method for coating concrete pipe with synthetic resin |
| CN101402826A (en) * | 2008-11-14 | 2009-04-08 | 上海维凯化学品有限公司 | Watersoluble polyurethane concrete paint base and method of producing the same |
| KR100935808B1 (en) * | 2009-04-03 | 2010-01-11 | 티오켐 주식회사 | Ultra-weatherability antipollution process over nonflammable ceramic coating materials and fluorine resins |
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2010
- 2010-12-30 CN CN2010106144291A patent/CN102553817A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1292307A (en) * | 1999-10-11 | 2001-04-25 | 国都化学株式会社 | Method for coating concrete pipe with synthetic resin |
| CN101402826A (en) * | 2008-11-14 | 2009-04-08 | 上海维凯化学品有限公司 | Watersoluble polyurethane concrete paint base and method of producing the same |
| KR100935808B1 (en) * | 2009-04-03 | 2010-01-11 | 티오켐 주식회사 | Ultra-weatherability antipollution process over nonflammable ceramic coating materials and fluorine resins |
Non-Patent Citations (1)
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| 赵年军: "浅谈京沪高速铁路混凝土桥面喷涂聚脲防水层施工技术", 《黑龙江科技信息》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105601327A (en) * | 2016-02-17 | 2016-05-25 | 安徽万诚达新型材料有限公司 | Concrete structural member repairing and protection method |
| CN106243972A (en) * | 2016-07-29 | 2016-12-21 | 上海基典防水科技有限公司 | A kind of high ferro concrete water-proof construction method |
| CN106320176A (en) * | 2016-08-11 | 2017-01-11 | 王斐芬 | Waterproof construction method of high-speed rail concrete |
| CN106320176B (en) * | 2016-08-11 | 2018-06-22 | 王斐芬 | High ferro concrete water-proof construction method |
| CN108002863A (en) * | 2017-12-08 | 2018-05-08 | 中建西部建设湖南有限公司 | A kind of method to the super-hydrophobic processing of concrete surface |
| CN108002863B (en) * | 2017-12-08 | 2020-03-10 | 中建西部建设湖南有限公司 | Method for performing super-hydrophobic treatment on concrete surface |
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Application publication date: 20120711 |