CN102383619B - Method for preventing corrosion of concrete members in tidal range zone and splash zone of ocean - Google Patents
Method for preventing corrosion of concrete members in tidal range zone and splash zone of ocean Download PDFInfo
- Publication number
- CN102383619B CN102383619B CN 201110312030 CN201110312030A CN102383619B CN 102383619 B CN102383619 B CN 102383619B CN 201110312030 CN201110312030 CN 201110312030 CN 201110312030 A CN201110312030 A CN 201110312030A CN 102383619 B CN102383619 B CN 102383619B
- Authority
- CN
- China
- Prior art keywords
- silane
- coating
- district
- concrete
- sealant
- 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.)
- Active
Links
Landscapes
- Sealing Material Composition (AREA)
Abstract
The invention discloses a method for preventing corrosion of concrete members in a tidal range zone and a splash zone of an ocean, belonging to the field of concrete member corrosion prevention. Aiming at the protection requirement in special corrosion environment, the method comprises the following steps: coating a layer of silane impregnant on the outer surface of concrete, wherein the penetration depth is more than 1mm; after natural air drying, coating a layer of silane end sealing polyether sealant in a scraping way, wherein the thickness is 2-5mm; then wrapping a prefabricated protective cover immediately; coating a layer of sealant in the protective cover in a scraping way; sealing the upper and lower ends and the corners of the protective cover with the sealant; and coating the whole wrapping system with weatherproof finishing paint. In the method, the glass reinforced plastic protection technology is adopted and combined with the sealing protection technology of the silane end sealing polyether sealant and the silane impregnating protection technology, thus realizing the effective protection on the concrete members in the tidal range zone and the splash zone. The technical construction is simple as well as convenient and fast, and the sealant has a reliable and excellent protection effect, therefore, the method has a good market popularization prospect.
Description
Technical field
The present invention relates to tidal range district, a kind of ocean and wave and spatter district's concrete component corrosion protection method, belong to the antiseptic project technical field.
Background technology
In recent years, the economic develop rapidly of China, infrastructure drop into and increase severely.Numerous concrete components have wherein been built.Concrete is widely used in Oversea bridge, the coastal engineering as a kind of nonmetals, and the corrosion in seawater is quite serious.The corrosion protection of concrete component has obtained those skilled in the art and has enough paid attention to, people have recognized that the concrete component corrosion of not doing any corrosion protection is very serious, be difficult to reach the application life of design, even some concrete component less than 10 years just by heavy corrosion, the overhaul of having to, the waste that expends a huge sum of money and resource.
Concrete component is in different corrosive environments in the ocean, those skilled in the art generally are divided into the marine corrosion environment from top to bottom marine atmosphere zone, wave and spatter district, tidal range district, district and 5 zones, ooze district under water, existing studies show that is in wave to spatter the concrete component corrosion rate in district and tidal range district the fastest, much larger than other zone, and the difficult problem that this regional corrosion protection method is the antiseptic project field always.
Be in that wave spatters the district and the concrete component corrosion protection method in tidal range district has a lot, mainly contain increase thickness of concrete cover, add concrete corrosion resistant agent, coating protection is flooded, added to employing epoxy-coated reinforcement, silane and to the reinforcing bar electrochemical protection etc.What use was maximum now is to add coating protection to defend the doctrine, and namely applies the method for coating at the concrete external surface.Its way generally is to adopt three coating structures anticorrosion, and bottom is epoxy primer, and the intermediate layer is the epoxy intermediate coat, and surface layer adopts polyurethane finish or fluorine carbon finishing paint.This method is to continue to use the anti-corrosion method of steel member, its anti-corrosion method, technology, coating member, coating type are all anticorrosion identical with the steel member, this method that adds coating protection is not taked corresponding processing according to concrete property, though therefore certain antiseptic effect is arranged, shortcoming also clearly.At first, use and to add coating to antiseptic concrete, the adhesive power of its coating and concrete substrate is low, only has 1 ~ 3MPa, coating to be easy to come off and causes anticorrosion inefficacy; Secondly, this method complex technical process will finish whole coating application 4 ~ 7 road coating approximately, and per pass coating all needs just can descend 4 ~ 24 hours hardening times the road application, therefore the application cycle very long, be difficult to construct to being in the engineering that wave spatters under district and the tidal range district environment; At last, the durability of paint coatings under marine environment is low, will thoroughly keep in repair its maintenance cost even more taller than application first in general 5 ~ 10 years.
Because never a good method solves the anticorrosion problem that wave spatters district and tidal range district concrete component, so still any preservative treatment is not done in this zone at present a lot of concrete component engineerings, its result will inevitably reduce the durability of concrete component greatly.
Summary of the invention
The invention provides under a kind of marine environment wave and spatter district and tidal range district concrete component corrosion protection method, has high-durability, than anticorrosive paint coating marine growth guard shield is difficult to destroy simple to operate on workability, safe and efficient and site operation cycle weak point.
The technical scheme that the present invention addresses the above problem is as follows:
Tidal range district, a kind of ocean and wave spatter district's concrete component corrosion protection method, it is characterized in that may further comprise the steps:
(1) the concrete external surface is polished, clean out the floating ash in surface and insecure attachment, and to the transition of polishing greater than the faulting of slab ends seam of 2mm;
(2) apply one silane impregnating agent, silane impregnating agent consumption 300g/ ㎡, length of penetration is greater than 1mm;
(3) behind the surface of concrete structure natural air drying of silane coating impregnating agent, the Silante terminated polyether seal glue of blade coating one deck, thickness are 2 ~ 5mm;
(4) Silante terminated polyether seal glue coats prefabricated protective cover after applying and finishing immediately; Protective cover inner surface polish in advance roughening treatment and one fluid sealant of blade coating;
(5) two ends and corner use fluid sealant to seal processing about the guard shield;
(6) the whole weather resistant finish paint that applies of coating system;
Described Silante terminated polyether seal glue is to be prepared from by following materials in weight portion:
Silante terminated polyether resin 25-40 part
PPG 10-25 part
Nano-calcium carbonate 30-42 part
Fumed silica 0.5-3 part
Titanium dioxide 0-5 part
Carbon black 0.1-1 part
Silane crosslinker 0.5-2 part
Nano-cerium oxide 0.3-1 part
Deicer 0.2-1.0 part
Adhesion promoter 0.05-1.0 part
Catalyzer 0.1-1.0 part;
Described fumed silica is the hydrophobic type fumed silica through the dimethyldichlorosilane end-blocking; Described silane crosslinker is 9165 type silane of Degussa; Described deicer is vinyltrimethoxy silane; Described adhesion promoter is epoxy radicals silicone hydride or end-blocking amino silane; Described crosslinking agent is phenyltrimethoxysila,e; Described catalyzer is organotin or chelating tin;
Silante terminated polyether seal glue preparation method is: nano-calcium carbonate, fumed silica, titanium dioxide, carbon black, nano-cerium oxide are put into duplicate rows star power mixer, under 90 ℃, vacuumize slow stirring 2h, rotating speed 350rpm; Finish after the dehumidifying, successively Silante terminated polyether resin, PPG, silane crosslinker, adhesion promoter, catalyzer, deicer are added in the duplicate rows star power mixer, under 90 ℃, vacuumize high-speed stirred 2h rotating speed 800rpm; After being uniformly dispersed, logical cooling water cools off; After being cooled to 50 ℃, catalyzer is added duplicate rows star power mixer, vacuumize slow stirring 0.5h, start, discharging are finished product then.
Above-mentioned Silante terminated polyether seal glue and concrete, prefabricated protective cover, coating all have excellent bond performance, and good springiness, the cohesive strength height; Ageing-resistant, Corrosion Protection is excellent; Silane crosslinker and nano-cerium oxide have been added in the prescription, macromolecule crosslink density and whole complexing density have been improved, and added nano-powder material in a large number in the prescription, the water-tight performance of Ti Gaoing simultaneously, use PPG to replace phthalic ester plasticizer in the prescription, do not contain any solvent, really accomplish environmental protection.
Described silane impregnating agent is isobutyl group triethoxysilane or iso-octyl triethoxysilane.
Described prefabricated protective cover is to be matrix with the unsaturated polyester resin, adds any one of glass fiber, carbon fiber and metallic fiber, and compacting, crosslinking curing become, and shape and size match with the shape of protected concrete component.
After guard shield coats, any one about guard shield in silane coating modified polyurethane sealant, silane modified polyether seal glue, polysulfide sealant, the polyurethane sealant.
The whole weather resistant finish paint that applies of described coating system is any one in acroleic acid polyurethane finish paint, fluorine carbon finishing paint and the polysiloxanes finish paint.
Above-mentioned silane coupler is isobutyl group triethoxysilane or iso-octyl triethoxysilane, infiltrate in the concrete surface micro-pore, can increase the adhesion stress between concrete and the Silante terminated polyether seal glue, also have the hydrophobic effect, further stop moisture to enter concrete substrate.
Used weather resistant finish paint has good weather, can further improve the durability of prefabricated protective cover, simultaneously whole concrete component color is consistent, and has landscape effect.
The invention has the beneficial effects as follows:The present invention has overcome the shortcoming of heavy anti-corrosion method commonly used now; the bonding of Silante terminated polyether seal glue and necessary physics are reinforced and are made method of the present invention have high adhesion force; the high-durability that prefabricated protective cover makes method of the present invention have excellent shielding properties, prefabricated protective cover cooperates the weather resistant finish paint to guarantee that method of the present invention has high-durability; than anticorrosive paint coating marine growth guard shield is difficult to destroy simple to operate, the safe and efficient and site operation cycle weak point of the present invention on workability.
The Silante terminated polyether seal glue of special use of the present invention is creative, and this fluid sealant also has following characteristics except the characteristic that possesses conventional Silante terminated polyether seal glue: the one, do not contain solvent, and do not contain the plasticizing agent of phthalate, environmental protection; The 2nd, add crosslinking agent and nano-cerium oxide in the prescription, improved crosslink density and the complexing density of fluid sealant, further improved the water resistance of fluid sealant.
The specific embodiment
Further illustrate the solution of the present invention and effect below in conjunction with embodiment:
Domestic certain concrete bridge is in marine environment, adopts the present invention to carry out corrosion protection.Wherein the case beam position of pontic and top bridge pier are in marine atmosphere eroded environment, and the bridge pier middle part is positioned at wave and spatters district and tidal range district corrosive environment, and the bridge pier bottom is in district and sea mud zone corrosion environment under water.To being positioned at the middle part bridge pier that wave spatters district and tidal range district corrosive environment, adopt the inventive method to carry out anticorrosion.
At first carry out the preparation of Silante terminated polyether seal glue, the preparation method is as follows:
Take by weighing 31 parts of the MS303 resins of Japanese Kaneka company according to weight portion, 21 parts of PPG2000 type PPGs, 38 parts of the 322 type nano-calcium carbonates of Belgium Su Wei, 2 parts of the R972 type fumed silicas of Germany Evonik Degussa Corp., 3.5 parts of the R902+ type titanium dioxides of E.I.Du Pont Company, 0.5 part of the NP60 type carbon black of Degussa, 1.5 parts of 9165 type phenyl silanes of Degussa, 0.5 part in the A-171 silane of U.S.'s Mitugao New Material Group, 0.3 part in the A-1120 type silane of U.S. Mai Tu company, 0.5 part of the rare earth cerium oxide of Guangdong riel, 0.7 part of dibutyl tin laurate.Nano-calcium carbonate, fumed silica, titanium dioxide, carbon black, rare earth cerium oxide are put into duplicate rows star power mixer, under 90 ℃, vacuumize slow stirring 2h(350rpm); Successively MS303 resin, PPG2000 type PPG, 9165 type phenyl silanes, A171 silane and A-1120 type silane are added in the duplicate rows star power mixer respectively, under 90 ℃, vacuumize high-speed stirred 2h(800rpm); After being uniformly dispersed, logical cooling water cools off; After being cooled to 50 ℃, dibutyl tin dilaurate is added duplicate rows star power mixer, vacuumize slow stirring 0.5h, start, discharging are standby then.
After preparing fluid sealant, can carry out on-site installation work.Behind the floating ash of polishing cleaning concrete surface and the faulting of slab ends seam, brush the iso-octyl triethoxysilane one, consumption is 300g/m2; One Silante terminated polyether seal glue of blade coating after the air dry of surface, thickness is 3mm; With one fluid sealant of blade coating after adopting the prefabricated unsaturated polyester (UP) glass steel protective cover inner surface of prior art with the sand papering alligatoring, existing side by side is about to prefabricated protective cover and is bonded on the concrete substrate; While is at the edge blade coating quick-drying type polyurethane fluid sealant of guard shield, with the complete good seal in corner; Spray 2 road self-cleaning fluorocarbon finish paints at last, build adds up to 80 μ m.
Through practical application, the on-the-spot detection shows that protective cover integral sealing, protection effect are good, can satisfy the tidal range district fully, wave spatters district's concrete erosion requirement of shelter.
Claims (6)
1. tidal range district, an ocean and wave spatter district's concrete component corrosion protection method, it is characterized in that may further comprise the steps:
(1) the concrete external surface is polished, clean out the floating ash in surface and insecure attachment, and to the transition of polishing greater than the faulting of slab ends seam of 2mm;
(2) apply one silane impregnating agent, silane impregnating agent consumption 300g/m
2, length of penetration is greater than 1mm;
(3) behind the surface of concrete structure natural air drying of silane coating impregnating agent, the Silante terminated polyether seal glue of blade coating one deck, thickness are 2～5mm;
(4) Silante terminated polyether seal glue coats prefabricated protective cover after applying and finishing immediately; Protective cover inner surface polish in advance roughening treatment and one fluid sealant of blade coating;
(5) two ends and corner use fluid sealant to seal processing about the guard shield;
(6) the whole weather resistant finish paint that applies of coating system;
Described Silante terminated polyether seal glue is to be prepared from by following materials in weight portion:
Silante terminated polyether resin 25-40 part
PPG 10-25 part
Nano-calcium carbonate 30-42 part
Fumed silica 0.5-3 part
Titanium dioxide 0-5 part
Carbon black 0.1-1 part
Silane crosslinker 0.5-2 part
Nano-cerium oxide 0.3-1 part
Deicer 0.2-1.0 part
Adhesion promoter 0.05-1.0 part
Catalyzer 0.1-1.0 part;
Described fumed silica is the hydrophobic type fumed silica through the dimethyldichlorosilane end-blocking; Described silane crosslinker is 9165 type silane of Degussa; Described deicer is vinyltrimethoxy silane; Described adhesion promoter is epoxy radicals silicone hydride or end-blocking amino silane; Described crosslinking agent is phenyltrimethoxysila,e; Described catalyzer is organotin or chelating tin;
Silante terminated polyether seal glue preparation method is: nano-calcium carbonate, fumed silica, titanium dioxide, carbon black, nano-cerium oxide are put into duplicate rows star power mixer, under 90 ℃, vacuumize slow stirring 2h, rotating speed 350rpm; Finish after the dehumidifying, successively Silante terminated polyether resin, PPG, silane crosslinker, adhesion promoter, deicer are added in the duplicate rows star power mixer, under 90 ℃, vacuumize high-speed stirred 2h rotating speed 800rpm; After being uniformly dispersed, logical cooling water cools off; After being cooled to 50 ℃, catalyzer is added duplicate rows star power mixer, vacuumize slow stirring 0.5h, start, discharging are finished product then.
2. tidal range district, ocean according to claim 1 and wave spatter district's concrete component corrosion protection method, it is characterized in that the Silante terminated polyether resin that described Silante terminated polyether seal glue adopts is STP-E10, the STP-E15 of MS203, MS303 resin and Germany's watt gram of Japanese Kaneka company, in the STP-E30 type resin any.
3. tidal range district, ocean according to claim 1 and wave spatter district's concrete component corrosion protection method, and it is characterized in that: described silane impregnating agent is isobutyl group triethoxysilane or iso-octyl triethoxysilane.
4. tidal range district, ocean according to claim 1 and wave spatter district's concrete component corrosion protection method; it is characterized in that: described prefabricated protective cover is to be matrix with the unsaturated polyester resin; any one of adding glass fiber, carbon fiber and metallic fiber; compacting, crosslinking curing become, and shape and size match with the shape of protected concrete component.
5. tidal range district, ocean according to claim 1 and wave spatter district's concrete component corrosion protection method, it is characterized in that: after the step of described coating guard shield, any one about guard shield in silane coating modified polyurethane sealant, silane modified polyether seal glue, polysulfide sealant and the polyurethane sealant.
6. tidal range district, ocean according to claim 1 and wave spatter district's concrete component corrosion protection method, it is characterized in that: the whole weather resistant finish paint that applies of the coating system described in the step (6) is any one in acroleic acid polyurethane finish paint, fluorine carbon finishing paint and the polysiloxanes finish paint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110312030 CN102383619B (en) | 2011-10-16 | 2011-10-16 | Method for preventing corrosion of concrete members in tidal range zone and splash zone of ocean |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110312030 CN102383619B (en) | 2011-10-16 | 2011-10-16 | Method for preventing corrosion of concrete members in tidal range zone and splash zone of ocean |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102383619A CN102383619A (en) | 2012-03-21 |
| CN102383619B true CN102383619B (en) | 2013-07-17 |
Family
ID=45823419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110312030 Active CN102383619B (en) | 2011-10-16 | 2011-10-16 | Method for preventing corrosion of concrete members in tidal range zone and splash zone of ocean |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102383619B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105040663A (en) * | 2015-07-02 | 2015-11-11 | 济南轨道交通集团有限公司 | Method for guaranteeing durability of concrete members in marine wave splashing area and water level changing area |
| CN106221640B (en) * | 2016-08-31 | 2021-10-01 | 国网辽宁省电力有限公司丹东供电公司 | Oil surface adhesive and repairing method using same |
| CN106700940B (en) * | 2016-12-16 | 2019-01-15 | 江苏卓奇新材料科技有限公司 | Unvulcanised silane modified polymer zinc powder cream and its composite protection structure for main rope of suspension bridge |
| CN109797873B (en) * | 2019-01-21 | 2020-09-11 | 上海岐海防腐工程技术有限公司 | Wrapping protection method for concrete member in tidal range area |
| CN109823708B (en) * | 2019-01-21 | 2020-01-21 | 上海岐海防腐工程技术有限公司 | Steel member surface heavy-duty anti-corrosion sealing winding maintenance method |
| CN110374977A (en) * | 2019-07-20 | 2019-10-25 | 中国船舶重工集团公司第七二四研究所 | The Fast Installation formula corrosion protection method of warship ship fastener |
| CN113185881B (en) * | 2021-05-10 | 2022-02-01 | 北京固斯特国际化工有限公司 | Permeable reactive anticorrosive material for concrete chimney and application thereof |
| CN115180880A (en) * | 2022-04-27 | 2022-10-14 | 厦门百正防腐工程有限公司 | Repairing and reinforcing material applied to concrete building surface in tidal range area |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4869037A (en) * | 1985-10-25 | 1989-09-26 | Murphy John J | Wall construction |
| JP2001002985A (en) * | 1999-06-17 | 2001-01-09 | Kansai Paint Co Ltd | Coating material composition for concrete structure |
| CN101250903A (en) * | 2008-04-02 | 2008-08-27 | 方远建设集团股份有限公司 | Surface coating anticorrosion concrete and construction method |
| CN101456756A (en) * | 2008-12-31 | 2009-06-17 | 江苏中矿大正表面工程技术有限公司 | Concrete structure heavy-duty nano composite coating and protection method |
| CN201872393U (en) * | 2010-10-14 | 2011-06-22 | 江苏中矿大正表面工程技术有限公司 | Concrete protective coating structure |
-
2011
- 2011-10-16 CN CN 201110312030 patent/CN102383619B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4869037A (en) * | 1985-10-25 | 1989-09-26 | Murphy John J | Wall construction |
| JP2001002985A (en) * | 1999-06-17 | 2001-01-09 | Kansai Paint Co Ltd | Coating material composition for concrete structure |
| CN101250903A (en) * | 2008-04-02 | 2008-08-27 | 方远建设集团股份有限公司 | Surface coating anticorrosion concrete and construction method |
| CN101456756A (en) * | 2008-12-31 | 2009-06-17 | 江苏中矿大正表面工程技术有限公司 | Concrete structure heavy-duty nano composite coating and protection method |
| CN201872393U (en) * | 2010-10-14 | 2011-06-22 | 江苏中矿大正表面工程技术有限公司 | Concrete protective coating structure |
Non-Patent Citations (4)
| Title |
|---|
| 唐全.汕头海湾大桥混凝土结构防腐涂装工艺.《中国新技术新产品》.2010,(第9期),第49页. * |
| 尤勇.钢筋混凝土结构外防腐的施工工艺.《北方交通》.2010,(第3期),第68-70页. |
| 王江鸿 * |
| 钢筋混凝土结构外防腐的施工工艺;尤勇;《北方交通》;20101231(第3期);第49页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102383619A (en) | 2012-03-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102383619B (en) | Method for preventing corrosion of concrete members in tidal range zone and splash zone of ocean | |
| CN101362920B (en) | Anticorrosion coating material | |
| CN109554064A (en) | A kind of weather-proof anti-corrosion corrosion-inhibiting coating and preparation method thereof for steel structure surface | |
| CN102775877B (en) | Method for preparing and spaying anticorrosion coating for western wind farm tower | |
| CN102925032B (en) | Dam concrete surface abrasion-resistant coating and coating method thereof | |
| CN103113825A (en) | Nano composite protecting coating and manufacturing method thereof | |
| CN106812334A (en) | Concrete framework reinforcement | |
| CN104120743A (en) | Concrete pile protection method used in marine environment | |
| CN103627277B (en) | Novel wear-resistant protective agent for wind power blades as well as preparation method and construction method for novel wear-resistant protective agent for wind power blades | |
| CN106700940B (en) | Unvulcanised silane modified polymer zinc powder cream and its composite protection structure for main rope of suspension bridge | |
| KR102476324B1 (en) | Nado film steel structure coating method | |
| CN105038064A (en) | Carbon fiber granule methacrylic resin/epoxy resin waterproof membrane composition and method | |
| CN105040663A (en) | Method for guaranteeing durability of concrete members in marine wave splashing area and water level changing area | |
| CN108661852A (en) | Composite protection layer and blade | |
| CN105419571B (en) | A kind of anticorrosion coat material | |
| CN1262785C (en) | Composite external anticorrosive layer for pipeline overhaul | |
| CN109797873B (en) | Wrapping protection method for concrete member in tidal range area | |
| CN107687214A (en) | A kind of painting method of concrete protection coating in industrial wastewater environment | |
| CN202621161U (en) | Shock-resistance reinforced glass flake lining | |
| CN201521037U (en) | Composite coating structure for sealing and protecting building project expansion joints | |
| CN104004447A (en) | High strength and energy saving flexible bridge frame | |
| CN211080832U (en) | Artificial sand stone paint coating structure | |
| CN109913092B (en) | Double liquid crystal structure toughened epoxy resin waterproof coating and preparation method thereof | |
| CN103113813A (en) | Hydraulic steel-structure anticorrosion anti-aging high-polymer nano modified coating material | |
| CN208347989U (en) | Wind power equipment viscoelastic body cladding coats anti-corrosion waterproof construction |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |