CN101314936A - Polyurea water-proof tack coat for bridge deck paving and construction method - Google Patents
Polyurea water-proof tack coat for bridge deck paving and construction method Download PDFInfo
- Publication number
- CN101314936A CN101314936A CNA2008100699379A CN200810069937A CN101314936A CN 101314936 A CN101314936 A CN 101314936A CN A2008100699379 A CNA2008100699379 A CN A2008100699379A CN 200810069937 A CN200810069937 A CN 200810069937A CN 101314936 A CN101314936 A CN 101314936A
- Authority
- CN
- China
- Prior art keywords
- polyurea
- deck
- bridge
- spraying
- tack coat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
A waterproof polyurea bonding layer in paving a bridge deck and the construction method thereof relate to a waterproof bonding layer for paving a bridge deck structure. The construction method is structurally characterized in that: polyurea elastomer (2) is coated on deck primer (1) and an interface adhesion agent (3) is coated on the polyurea elastomer (2). The construction method comprises the following steps: the first step, conducting sand blasting treatment for the bridge deck; the second step, spraying, brushing or roller coating the primer material; the third step, spraying the polyurea elastomer; and the fourth step, applying a layer of interface adhesion agent on a polyurea coating layer. The construction is quick and convenient. The waterproof polyurea bonding layer has excellent leakage resistance, waterproof property and corrosion resistance, diversifies the waterproof bonding layer materials in the deck structure and improves the waterproof bonding effect.
Description
One, technical field
The present invention relates to the water-proof tack coat in the deck installation structure, polyurea water-proof adhesive linkage in especially a kind of deck paving.
Two, background technology
Flourish along with China's infrastructure construction, highway bridge, urban road overpass bridge, viaduct are built in a large number, improving constantly of category of roads, the durability that bridge uses also gets more and more people's extensive concerning day by day, how guaranteeing the quality of bridge construction and make it reach service life, has been current important problems.The factor that influences the bridge construction quality is many-sided, and the infiltration of water is to cause one of the most direct and most important reason of bridge construction destruction.At bridge engineering circle, the understanding of waterproof has also been experienced one from only relying on the sloping in length and breadth draining in gutter and road surface to not only relying on the sloping in length and breadth draining in gutter and road surface, also take in the paving structure layer, to be provided with the measure that waterproofing course comes waterproof.The effect of bridge surface waterproof layer mainly is protection concrete, steel plate, reinforcing bar, anti-sealing particularly the salt solution of snow melt in winter and coastal moist salt fog to the corrosion of concrete, steel plate, reinforcing bar.Thereby the significance of bridge surface waterproof layer is the source that cuts off water just and guarantees that effectively bridge floor exempts from destruction, prolongs its application life, improves the durability of bridge.Waterproofing course is set in deck paving has become current traffic highway circle personage's common recognition.
Abroad, country such as U.S. clearly regulation city and highway bridge must be provided with waterproofing course.China begins to pay attention to the problem that bridge suffers the rainwater etch from the eighties in 20th century, and has carried out many case studies with regard to the bridge construction waterproof technique.Think the subject matter that the bridge waterproof exists by researching and analysing: the one, the bridge design problem showing that mainly unreasonable the and stressed weak link of the design place of mating formation do not do waterproofing work and the unreasonable problem that causes of bridge construction waterproofing design; The 2nd, the waterproofing materials problem mainly is the waterproofing materials that lacks the bridge special use; The 3rd, on the construction link, the waterproof construction quality does not form unified operational procedure and acceptance criteria as yet, lacks the bridge engineering waterproof construction troop of specialty.Bridge deck water-proof is similar with buildings waterproof, is a system engineering, relates to material, design, construction and maintenance management, and wherein material is the basis, and design and construction are to guarantee.The bridge floor of highway in China bridge and urban interchange generally adopts asphalt concrete pavement layer at present, under this condition, carries out the waterproofing course design, the choose reasonable waterproofing materials, and it is particularly important correctly formulating construction technology.
In deck paving, to mat formation and generally form by the waterproof system and the top layer of mating formation, bridge deck water-proof and transmission vehicular load are mainly realized by the waterproof system of mating formation, are the cores of deck paving.The waterproof system is made up of the water-proof tack coat and the lower floor of mating formation.That is to say that deck installation structure is water-proof tack coat, the mat formation lower floor and the top layer formation of mating formation from the bottom to top.
Both at home and abroad at the difference of the bridge floor different water-proof tack coat of having mated formation System Design, mainly contain coiled material class, pitch class, the reactive explosive class of filming of filming.The reactive explosive class of filming mainly contains epoxy resin, bituminous epoxy, Britain at present
The polymethyl methacrylate waterproof film of waterproof system.
Water-proof binding system based on epoxy resin, European countries such as Germany use many, also obtained application in many large-stride steel bridge decks at home (as Shandong triumph Yellow River Bridge, the Changsha trident rock bridge etc.) engineering of mating formation, respond well, just the performance difference of each manufacturer's epoxide resin material causes indivedual engineering construction qualities to have defective.
Make the best use of the advantages in profit based on the water-proof binding system of bituminous epoxy and to adopt in the deck pavings such as Jiang Daqiao, yangtze river in nanjing two bridges, yangtze river in nanjing three bridges, its advantage is that water proofing property, anti-deformation are good, and shortcoming is that constructing operation is complicated, cost is higher.
Britain based on polymethyl methacrylate
Waterproof body ties up to national use many such as Britain, is applied in the deck paving engineerings such as Hong Kong Tsing Ma Bridge at home, Guangdong Humen Bridge reparation, vegetable garden, Chongqing dam length Jiang Daqiao, and is respond well.
Polyurea elastomer belongs to the reactivity class material of filming, because its excellent physical and mechanical property, resistance to ag(e)ing and workability fast, easily, obtains using very widely at aspects such as antiseepage, waterproof, anticorrosion and wear-resisting coatings abroad.China has carried out relevant research and application 20 end of the centurys on the basis in introduction of foreign technology, it is anticorrosion etc. to be applied to terrace, hull coating, building barrier coat, industrial pipeline, container.Chinese patent CN101037587A discloses polyurea elastomer construction engineering waterproof material; CN101033335A discloses polyurea elastic body pipeline anti-rot protection material; CN1817989A discloses a kind of spray polyurea high-strength and waterproofing coating and job practices thereof.All these patents all are to disclose the compound method of polyurea materials and be applied to the coated article surface as waterproof, protective material such as anticorrosion.Polyurea materials is applied to yet there are no report as water-proof tack coat in the deck installation structure layer.
Three, summary of the invention
The objective of the invention is polyurea materials is applied to design polyurea water-proof tack coat in the deck installation structure layer, increased the kind of water-proof binding layer material in the deck installation structure, and improved the water-proof binding effect.
The present invention is made up of bridge floor priming paint, polyurea elastomer, interface adhesive, and it has polyurea elastomer above bridge floor priming paint, and interface adhesive is arranged above the polyurea elastomer.
The present invention, the effect of bridge floor priming paint are the holes of sealing cement concrete, stop the overflow of steam, prevent the corrosion of steel plate and strengthen above film adhesion stress with bridge deck.To cement concrete bridge deck, priming paint mainly adopts aqueous epoxy resins, epoxy resin, emulsion type asphalt waterproofing paint, solvent-borne type water-proof adhesive; To the steel bridge face, priming paint mainly adopts pure dissolubility zinc-rich coating, aqueous inorganic zinc rich primer, inorganic phosphate zinc rich primer, epoxy zinc-rich lacquer, the heavy anti-corrosion primer of epoxy iron oxide red, the heavy anti-corrosion primer of modified epoxy red lead.
The polyurea elastomer of spraying is thick the filming of 1～3mm, is the pith of water-proof tack coat.Be made of two components: the A component is to be contained-semi-prepolymer of NCO by the synthetic end group of the excessive isocyanate reaction of amine terminated polyether or end hydroxy polyether and stoichiometry, and NCO content is between 12%～25% in the semi-prepolymer; The B component is made up of amine terminated polyether, liquid amine chain extender and filler.Filler has titanium dioxide, precipitated calcium carbonate, swell soil.
The mass parts of B component is: 30～70 parts of amine terminated polyethers, 10～50 parts of liquid amine chain extender, 0～10 part of filler.
The effect of interface adhesive is the adhesion stress that increases deck paving lower floor and polyurea water-proof tack coat.Interface adhesive has polyurethane, epoxy resin, PMA resin, hot melt pitch, cut back bitumen.
Polyurea water-proof tack coat of the present invention is realized by following construction sequence in deck installation structure:
The first step: bridge floor sandblast and cleaning
To cement concrete bridge deck, the at first necessary cleaning of basal plane, drying (newly-built concrete bridge deck is aquation fully, dry 28d) and solid, no laitance, oil or other surface contamination are carried out blasting treatment and cleaning totally then.
To the steel bridge face, remove steel surface iron rust, dirt and foreign matter, meet the Sa2.5 level after the blasting treatment, reveal metallic luster.
Second step: spraying, brushing or roller coating primer material
To the cement concrete bridge deck after process sandblast and the cleaning, spraying, brushing or roller coating one deck bridge floor primer material;
To the steel bridge face after process sandblast and the cleaning, spraying, brushing or roller coating one deck bridge floor primer material;
Control priming paint thickness is 0.01～0.1mm, maintenance 1～48h, forms bridge floor priming paint;
The 3rd step: Spray Polyurea Elastomer
Spraying polyurea elastomer material adopts special-purpose high pressure painting equipment, this equipment by have material-transporting system stably, accurate material metering system, uniformly mixing of materials system, good material atomization system and easily the material purging system constitute;
By this equipment that A, the B component of polyurea elastomer material is indoor back in the moulding of bridge floor priming paint surface atomizing by mixing, atomizing in the high pressure mixing of spray gun, polymer molecular structure after the moulding is highly cross-linked, the molecular structure densification, produce that high densification, high tensile, height are pliable and tough, the paint film of high rigidity, make its energy wear-resistant, tear-proof and shock resistance;
Spraying polyurea elastomer material will carry out together, 5～10 seconds blanking times of each road, to cover together down one 50%, be commonly called as " pressure rifle ", want vertical with last spraying direction together down simultaneously, only in this way could guarantee that coating is even, polyurea elastomer thickness is 1～3mm; Maintenance 3～24h forms polyurea elastomer;
Before the construction, bits on the bridge floor priming paint and foreign material will be cleaned out as far as possible, can use dust catcher to clear up;
The 4th step: spraying, brushing or roller coating interface adhesive
Spraying on polyurea elastomer is filmed, brushing or roller coating one deck interface adhesive material, consumption is 0.1～0.5Kg/m
2, maintenance 10～48h forms the bonding interface agent.
The technical performance index of deck paving polyurea water-proof tack coat of the present invention sees Table 1.
The mat formation technical performance index of polyurea water-proof tack coat of table Bridge 1 face
| Project | Index |
| Hot strength, MPa | ≥10 |
| Fracture elongation, % | ≥150 |
| Tearing strength, kN/m | ≥40 |
| Hardness (Shao Shi D) | 40～60 |
| Water resistance (30d) | Non-corroding, non-foaming, do not come off |
| Low temperature flexibility | Do not ftracture |
| Salt fog resistance (2000h) | Non-corroding, non-foaming, do not come off |
| With concrete drawing adhesion strength (25 ℃), MPa | ＞0.7 |
| With steel plate drawing adhesion strength (25 ℃), MPa | ＞4 |
The present invention has construction fast, conveniently, and excellent antiseepage, waterproof, antiseptic property have increased the kind of waterproofing tack coat material in the structure of bridge floor shop, and improved the waterproof adhesive effect.
Four, description of drawings
Further specify the present invention below in conjunction with accompanying drawing.
Accompanying drawing is a section structure schematic diagram of the present invention.
Among the figure: the agent of 1-bridge floor priming paint 2-polyurea elastomer 3-bonding interface
Five, the specific embodiment
Below by a embodiment the present invention is specifically described paving steel bridge deck.
As shown in drawings, be made up of bridge floor priming paint 1, polyurea elastomer 2, interface adhesive 3, it has polyurea elastomer 2 above bridge floor priming paint 1, interface adhesive 3 is arranged above the polyurea elastomer 2.
Its construction method step is as follows:
(1) material
1, priming paint is the epoxy zinc-rich lacquer;
2, the A component of polyurea elastomer is to be contained-semi-prepolymer of NCO by the synthetic end group of amine terminated polyether and stoichiometry excess fats family isocyanate reaction, and NCO content is 19%; The mass parts of B component is 55 parts of amine terminated polyethers, 38 parts of liquid amine chain extender, 7 parts of titanium dioxides;
The volume ratio of A, B component is 1: 1;
3, interface adhesive is a hot melt pitch.
(2) job practices
1, to the sandblast of steel bridge face, cleaning, remove steel surface iron rust, dirt and foreign matter, meet the Sa2.5 level after the blasting treatment, reveal metallic luster;
2, one epoxy zinc rich primer of roller coating, priming paint thickness is 0.05mm, maintenance 24h;
3, adopt the H-20/35 main frame of U.S. Gusmer company production and the spraying equipment system that the GX-7 spray gun is formed, the temperature of control polyurea elastomer A, B component materials is 65 ℃, bleed pressure 0.70～0.85MPa, material output quantity 2～18kg/min carries out bridge floor priming paint 1 surperficial spraying application, and build is 2mm, maintenance 12h;
4, spraying one deck hot melt pitch on polyurea elastomer 2 is filmed, consumption is 0.2Kg/m
2Maintenance 12h;
5, in order to test the bond effect of polyurea water-proof tack coat in whole paving steel bridge deck structure, on the water-proof tack coat upper berth of above-mentioned moulding the bituminous concrete behind one deck 4mm.
(3) test result
Test result to above-mentioned polyurea water-proof tack coat sees Table 2.
The polyurea water-proof tack coat test result of table 2 embodiment
| Test item | Measured value |
| Hot strength, MPa | 18.8 |
| Fracture elongation, % | 352 |
| Tearing strength, kN/m | 56 |
| Hardness (Shao Shi D) | 55 |
| Low temperature flexibility | Do not ftracture |
| Salt fog resistance (2000h) | Non-corroding, non-foaming, do not come off |
| With steel plate drawing adhesion strength (25 ℃), MPa | 7.8 |
| The drawing adhesion strength of combining structure (25 ℃), MPa | 1.81 |
| The compression shear strength of combining structure and steel plate (25 ℃), MPa | 2.25 |
As seen, the water-proof tack coat of embodiment have salt spray resistance, hot strength height, tearing strength height, strong to the matrix bonding force, in paving structure characteristics such as drawing adhesion strength, compression shear strength height, be comparatively ideal deck paving water-proof bond material.
Claims (7)
1, polyurea water-proof tack coat in a kind of deck paving, form by bridge floor priming paint (1), polyurea elastomer (2), interface adhesive (3), it is characterized in that polyurea elastomer (2) is arranged above the bridge floor priming paint (1), interface adhesive (3) is arranged above the polyurea elastomer (2).
2, polyurea water-proof tack coat in a kind of deck paving according to claim 1 is characterized in that cement concrete bridge deck, and bridge floor priming paint (1) is aqueous epoxy resins, epoxy resin, emulsion type asphalt waterproofing paint, solvent-borne type water-proof adhesive.
3, polyurea water-proof tack coat in a kind of deck paving according to claim 1, it is characterized in that to the steel bridge face bridge floor priming paint (1) is pure dissolubility zinc-rich coating, aqueous inorganic zinc rich primer, inorganic phosphate zinc rich primer, epoxy zinc-rich lacquer, the heavy anti-corrosion primer of epoxy iron oxide red, the heavy anti-corrosion primer of modified epoxy red lead.
4, polyurea water-proof tack coat in a kind of deck paving according to claim 1 is characterized in that polyurea elastomer is made of two components:
The A component is to be contained-semi-prepolymer of NCO by the synthetic end group of the excessive isocyanate reaction of amine terminated polyether or end hydroxy polyether and stoichiometry, and NCO content is between 12%～25% in the semi-prepolymer;
The B component is made up of amine terminated polyether, liquid amine chain extender and filler, and the mass parts of B component is 30～70 parts of amine terminated polyethers, 10～50 parts of liquid amine chain extender, 0～10 part of filler.
The volume ratio of A, B component is 1: 2～2: 1.
5, polyurea water-proof tack coat in a kind of deck paving according to claim 1 is characterized in that interface adhesive is polyurethane, epoxy resin, PMA resin, hot melt pitch, cut back bitumen.
6, polyurea water-proof tack coat in a kind of deck paving according to claim 1 is characterized in that filler is titanium dioxide, precipitated calcium carbonate, swell soil.
7, polyurea water-proof tack coat job practices in a kind of deck paving is characterized in that step is as follows:
The first step: bridge floor sandblast and cleaning
To cement concrete bridge deck, the at first necessary cleaning of basal plane, drying (newly-built concrete bridge deck is aquation fully, dry 28d) and solid, no laitance, oil or other surface contamination are carried out blasting treatment and cleaning totally then;
To the steel bridge face, remove steel surface iron rust, dirt and foreign matter, meet the Sa2.5 level after the blasting treatment, reveal metallic luster.
Second step: spraying, brushing or roller coating primer material
To the cement concrete bridge deck after process sandblast and the cleaning, spraying, brushing or roller coating one deck bridge floor primer material;
To the steel bridge face after process sandblast and the cleaning, spraying, brushing or roller coating one deck bridge floor primer material;
Control priming paint thickness is 0.01～0.1mm, maintenance 1～48h, forms bridge floor priming paint (1);
The 3rd step: Spray Polyurea Elastomer
Spraying polyurea elastomer material adopts special-purpose high pressure painting equipment, this equipment by have material-transporting system stably, accurate material metering system, uniformly mixing of materials system, good material atomization system and easily the material purging system constitute;
By this equipment that A, the B component of polyurea elastomer material is indoor back in bridge floor priming paint (1) surface atomizing moulding by mixing, atomizing in the high pressure mixing of spray gun, polymer molecular structure after the moulding is highly cross-linked, the molecular structure densification, produce that high densification, high tensile, height are pliable and tough, the paint film of high rigidity, make its energy wear-resistant, tear-proof and shock resistance;
Spraying polyurea elastomer material will carry out together, 5～10 seconds blanking times of each road, to cover down together one 50%, be commonly called as " pressure rifle ", want vertical with last spraying direction together down simultaneously, only in this way could guarantee that coating is even, polyurea elastomer thickness is 1～3mm, maintenance 3～24h, forms polyurea elastomer (2);
Before the construction, bits and foreign material on the bridge floor priming paint (1) will be cleaned out as far as possible, can use dust catcher to clear up;
The 4th step: spraying, brushing or roller coating interface adhesive
Spraying, brushing or roller coating one deck interface adhesive material on polyurea elastomer (2) is filmed, consumption is 0.1～0.5Kg/m
2, maintenance 10～48h forms interface adhesive (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100699379A CN101314936A (en) | 2008-07-07 | 2008-07-07 | Polyurea water-proof tack coat for bridge deck paving and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100699379A CN101314936A (en) | 2008-07-07 | 2008-07-07 | Polyurea water-proof tack coat for bridge deck paving and construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101314936A true CN101314936A (en) | 2008-12-03 |
Family
ID=40106070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100699379A Pending CN101314936A (en) | 2008-07-07 | 2008-07-07 | Polyurea water-proof tack coat for bridge deck paving and construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101314936A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102472024A (en) * | 2009-07-07 | 2012-05-23 | Sika技术股份公司 | Roadway structure having improved adhesive properties |
| CN106149556A (en) * | 2016-07-29 | 2016-11-23 | 中交第航务工程局有限公司 | The construction method of methyl methacrylate road surface coating |
| 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 |
| CN107829406A (en) * | 2017-12-01 | 2018-03-23 | 李泽月 | Hydraulic structure composite anti-penetrating system and the method for forming system |
| CN109486382A (en) * | 2018-10-12 | 2019-03-19 | 华南理工大学 | A kind of lignin-base carbamide paint and preparation method |
| CN109797647A (en) * | 2019-03-21 | 2019-05-24 | 河南省交通规划设计研究院股份有限公司 | A kind of composite modified asphalt bridge deck water-proof tack coat |
| CN114412098A (en) * | 2022-02-17 | 2022-04-29 | 刘光华 | Manufacturing method and construction method of sheet material with anti-corrosion and anti-slip additional layer |
| CN114808690A (en) * | 2020-07-03 | 2022-07-29 | 重庆市智翔铺道技术工程有限公司 | Steel bridge deck pavement structure |
-
2008
- 2008-07-07 CN CNA2008100699379A patent/CN101314936A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102472024A (en) * | 2009-07-07 | 2012-05-23 | Sika技术股份公司 | Roadway structure having improved adhesive properties |
| CN102472024B (en) * | 2009-07-07 | 2014-08-13 | Sika技术股份公司 | Roadway structure having improved adhesive properties |
| CN106149556A (en) * | 2016-07-29 | 2016-11-23 | 中交第航务工程局有限公司 | The construction method of methyl methacrylate road surface coating |
| 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 |
| CN107829406A (en) * | 2017-12-01 | 2018-03-23 | 李泽月 | Hydraulic structure composite anti-penetrating system and the method for forming system |
| CN109486382A (en) * | 2018-10-12 | 2019-03-19 | 华南理工大学 | A kind of lignin-base carbamide paint and preparation method |
| CN109797647A (en) * | 2019-03-21 | 2019-05-24 | 河南省交通规划设计研究院股份有限公司 | A kind of composite modified asphalt bridge deck water-proof tack coat |
| CN114808690A (en) * | 2020-07-03 | 2022-07-29 | 重庆市智翔铺道技术工程有限公司 | Steel bridge deck pavement structure |
| CN114808690B (en) * | 2020-07-03 | 2023-07-18 | 重庆市智翔铺道技术工程有限公司 | Steel bridge deck pavement structure |
| CN114412098A (en) * | 2022-02-17 | 2022-04-29 | 刘光华 | Manufacturing method and construction method of sheet material with anti-corrosion and anti-slip additional layer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101314936A (en) | Polyurea water-proof tack coat for bridge deck paving and construction method | |
| CN107829406B (en) | Composite barrier system for hydraulic building and method for forming the same | |
| CN201459603U (en) | Epoxy modified asphalt concrete steel bridge deck pavement structure | |
| CN101307450A (en) | Guarding system for railway steel bridge deck and construction process thereof | |
| KR100594508B1 (en) | Reinforcing methods using as silane modified epoxy composition for underwater structure | |
| CN202323615U (en) | Steel bridge road surface pavement structure | |
| CN102296514B (en) | Anti-skating wearing layer of epoxy asphalt pavement and preparation method thereof | |
| CN206069753U (en) | A kind of water-proof climate resisting polyurea coating | |
| CN107955517B (en) | Polyurea-based elastomer material for concrete protection and seepage prevention of hydraulic buildings | |
| CN107337993A (en) | A kind of high durability concrete protection system of rapid construction and preparation method thereof | |
| CN102219441A (en) | Wear-resistant, noise-reduction and heat-insulation epoxy resin emulsified asphalt mortar coating | |
| CN207878393U (en) | Hydraulic structure composite anti-penetrating system | |
| CN100451080C (en) | Modified double-component epoxy resin paint | |
| KR20100063731A (en) | Method for producing mineral-bearing cover layers for floor coverings | |
| CN203440752U (en) | Steel bridge deck pavement structure | |
| CN109594471A (en) | The paving structure and its construction method of Steel Bridge Deck | |
| CN101935971A (en) | Steel bridge deck protecting device and production method thereof | |
| CN112227233A (en) | Construction process for repairing bridge by using permeable waterproof anticorrosive spraying material | |
| Zhou et al. | Overview: application of resin waterproof adhesive materials in bridge deck pavement in China | |
| CN103420642A (en) | Abrasion-resisting mortar repairing material with high elasticity and construction technology | |
| CN109134813A (en) | A kind of carbamide resin synthesis technology | |
| CN103113818B (en) | Preparation and application of solvent-free spraying polyurethane pipeline mending coating | |
| CN201254693Y (en) | Guarding system for railway steel bridge deck | |
| CN206800193U (en) | A kind of durable cement concrete bridge floor composite pavement structure | |
| CN113831822A (en) | Method for manufacturing high-performance polyurea composite material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20081203 |