CN112942889A - Construction method for adhering fiber cloth to underwater impregnated adhesive - Google Patents
Construction method for adhering fiber cloth to underwater impregnated adhesive Download PDFInfo
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- CN112942889A CN112942889A CN202110160803.3A CN202110160803A CN112942889A CN 112942889 A CN112942889 A CN 112942889A CN 202110160803 A CN202110160803 A CN 202110160803A CN 112942889 A CN112942889 A CN 112942889A
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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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Abstract
The invention relates to a construction method for sticking fiber cloth by using underwater impregnated adhesive, which comprises the following steps: washing impurities on the basal plane; distinguishing the polishing range by using a rope, removing marine organisms and a loose layer, polishing edges and corners and the surface of concrete, and repairing to be flat; cutting the fiber cloth according to the size, and preparing two layers of plastic films; uniformly mixing the glue A and the glue B; coating the impregnating adhesive on a plastic film, coating fiber cloth, coating a layer of impregnating adhesive on the fiber cloth, coating a second layer of plastic film on the fiber cloth after the fiber cloth is scraped, coating the fiber cloth into small rolls, and immediately placing the rolls in water for later use; the constructor dives to paste the position and tears the plastic film, puts fibre cloth one end upright and along the rope, slowly rolls to the other end, scrapes according to fibril direction with the scraper blade and presses, and it can to tear outer plastic film again after pasting fibre cloth one day. The method can effectively solve the problems that the existing construction method is difficult to ensure the accuracy of the position for pasting the carbon cloth, the construction time is short, and the base plane reinforcement effect is easily influenced.
Description
Technical Field
The invention relates to the technical field of impregnating adhesive, in particular to a construction method for adhering fiber cloth to underwater impregnating adhesive.
Background
The underwater carbon fiber impregnating adhesive is used for repairing and reinforcing underwater concrete, the construction method generally comprises the steps of spreading a carbon cloth on a double-layer plastic film, repeatedly rolling the impregnating adhesive along the fiber direction of the carbon cloth by using a scraper to penetrate into the carbon cloth, ensuring that the guarantee adhesive layer on one surface of the carbon cloth is thick, spreading the other layer of the double-layer film on the carbon cloth, wrapping the carbon cloth into a small roll for standby according to the trend of carbon wires, diving to a sticking position during construction to spread the rolled carbon cloth, tearing the film with the thicker adhesive layer, sticking the carbon cloth on a reinforcing base surface in a sticking mode from one end to the other end, repeatedly scraping and pressing the carbon cloth in the carbon wire direction by using the scraper while sticking, so that the carbon fiber cloth is straight, extended and free of bubbles, the impregnating adhesive fully penetrates into the surface layer of the concrete, and tearing off the other film after the carbon cloth is stuck for 24 hours. The construction method is difficult to ensure the accuracy of the position for pasting the carbon cloth during construction, and in addition, the impregnating compound is high in curing speed, so that construction needs to be carried out as soon as possible, the construction time is shortened as far as possible, and accordingly, constructors are worried about, and the construction effect is influenced, so that a new technical scheme needs to be designed urgently to comprehensively solve the problems in the prior art.
Disclosure of Invention
The invention aims to provide a construction method for adhering fiber cloth by using underwater impregnated adhesive, which can effectively solve the problems that the existing construction method is difficult to ensure the accuracy of adhering carbon cloth position and the construction time is short, and the basal plane reinforcement effect is easily influenced.
In order to solve the technical problems, the invention adopts the following technical scheme:
a construction method for adhering fiber cloth by using underwater impregnated adhesive comprises the following steps:
s1, base surface treatment: determining the grade and the position of the fiber cloth to be adhered according to the requirements of a design drawing, and washing moss, sludge and impurities on the base surface; distinguishing a range needing to be polished by using a rope or a tying belt, then removing marine organisms and a loose layer on a base surface in the polishing range, polishing off edges and corners of base surface concrete and the surface of the concrete until the base layer is exposed, and finally carrying out underwater impregnation glue or underwater leveling glue repair on the defective concrete surface until the concrete surface is smooth;
s2, blanking: cutting the fiber cloth to be adhered according to the requirement of a design drawing, and preparing two layers of plastic films, wherein the length is greater than the fiber cloth by 100-200 mm, and the width is greater than the fiber cloth by 50 mm;
s3, mixing: weighing the glue A and the glue B according to the weight ratio of 3:1, and stirring at the speed of not more than 300 revolutions until the color and the shape of the mixed glue are uniform to obtain the dipping glue;
s4, prepreg carbon cloth: uniformly coating the prepared impregnating compound on a plastic film by using a scraper according to the length and the width of fiber cloth, repeatedly rolling the coated fiber cloth according to the fiber direction until the impregnating compound is soaked into the fiber cloth, then coating a layer of impregnating compound on the fiber cloth, leveling the coating, overlapping and covering a second layer of plastic film on the fiber cloth, finally wrapping the fiber cloth into small rolls by using a hollow tube according to the trend of fibrils, and immediately putting the rolls into water for later use;
s5, pasting fiber cloth: the constructor takes out the fiber cloth after soaking, dive and launch the fiber cloth to pasting the position, tear that the glue film leans on the base material face that plastic film, put fiber cloth one end and just along spacing rope or frenulum, slowly roll extrusion or scrape the outer plastic film of pressure fiber cloth to the other end, let the fiber cloth paste the base face through glue on, scrape the pressure according to the fibril direction with the scraper blade, tear outer plastic film again after pasting fiber cloth 23 ~ 25 hours, accomplish fiber cloth and paste the process promptly.
Wherein the A glue comprises the following components in parts by weight: 13-15 parts of epoxy resin, 0.4-0.6 part of toughening agent, 1.3-1.5 parts of diluent, 0.4-0.6 part of white carbon black, 0.6-1.4 parts of active calcium carbonate and 4.8-5.4 parts of active silicon micro powder;
the glue B comprises the following components in parts by weight: 7.1-7.3 parts of curing agent, 0.1-0.2 part of accelerator and 0.1-0.2 part of coupling agent.
The fiber cloth used in the construction method is carbon fiber cloth or aramid fiber cloth or glass fiber cloth or basalt cloth.
The thickness of the plastic film was 10 filaments.
According to the construction method for adhering the fiber cloth by using the underwater impregnated adhesive, the position to be polished is framed by using the rope or the frenulum, the range of a base surface to be repaired is determined, and when the fiber cloth is adhered, the rope or the frenulum is used as a standard line and is rolled and unfolded along the rope or the frenulum, so that the accuracy of the adhering position can be ensured and the adhering efficiency can be improved; in addition, the rolled fiber cloth is immediately put into water, and the curing speed of the impregnating adhesive is delayed by utilizing the heat generated by the chemical reaction after the glue A and the glue B are mixed, so that the operable time of constructors is prolonged, and the pasting effect of the fiber cloth is ensured.
The construction method is suitable for carbon fiber cloth, aramid fiber cloth, glass fiber cloth and basalt cloth, is widely applied, increases the replaceability of the base surface reinforcing material, and enables the base surface construction to be more flexible. In addition, the adopted impregnating adhesive is a solvent-free two-component impregnating resin adhesive, has strong seawater resistance and chemical corrosion resistance, high mechanical strength, certain thixotropy and no flow in construction, can be constructed on dry and wet base surfaces, can be widely applied and can meet the requirements of higher elastic modulus, elongation and shear resistance.
Detailed Description
In order that the objects and advantages of the invention will be more clearly understood, the following description is given in conjunction with the accompanying examples. It is to be understood that the following text is merely illustrative of one or more specific embodiments of the invention and does not strictly limit the scope of the invention as specifically claimed.
A construction method for adhering fiber cloth by using underwater impregnated adhesive comprises the following steps:
s1, base surface treatment: determining the grade and the position of the carbon fiber cloth to be adhered according to the requirements of design drawings, and flushing moss, sludge and the like by using a high-pressure water gun; the method comprises the steps of distinguishing approximate ranges needing to be polished by ropes or cloth belts different from colors of a base surface, removing marine organisms and surface loose layers of the base surface by using an air pick, then grinding sharp edges and corners of concrete of the base surface and the surface of the concrete by using a pneumatic grinding machine according to the standard requirements of concrete structure reinforcement design specifications GB 50367-2013 until a solid base layer is exposed, and repairing the defective surface of the concrete to be flat by using underwater impregnating adhesive or underwater leveling adhesive.
S2, blanking: cutting the carbon fiber cloth to be adhered according to the drawing requirements, preparing two layers of plastic films, wherein the length of the two layers of plastic films is slightly longer than the carbon fiber cloth by 100-200 mm, the width of the two layers of plastic films is larger than the width of the carbon fiber cloth by 50mm, and the thickness of the plastic films is about 10 threads; when the base material is a column, the lapping length of the carbon fiber cloth needs to be considered, and the normal lapping length is more than 300 mm.
S3, mixing: weighing the glue A and the glue B according to the weight ratio of 3:1, putting the glue A and the glue B into a container with a larger opening, stirring at a low speed of not more than 300 revolutions until the color and the shape of the mixed glue are completely uniform, and ensuring that all parts are contacted in the stirring process so as to obtain the optimal mixing effect.
S4, pre-dipping carbon fiber cloth: evenly paint the scraper blade for the impregnated glue of transferring well on plastic film according to carbon cloth's length and width, cover carbon cloth and roll repeatedly according to the fibre direction and soak to carbon fiber in, scribble the one deck impregnated glue again on cloth, and strickle off, then overlap and cover second floor plastic film on carbon cloth, carbon cloth's two-sided glue film all will be full, wrap up into the small book for subsequent use according to the carbon silk trend carbon cloth with the hollow tube again, put people's aquatic immediately after rolling up, release the produced heat of chemical reaction after the glue mixes, delay solidification speed, but the extension operating time.
S5, pasting carbon fiber cloth: the constructor dives to the sticking position to unfold the rolled carbon fiber cloth, slowly tears the film of the glue layer close to the surface of the base material, puts one end of the carbon fiber cloth right and rolls or scrapes the plastic film outside the carbon fiber cloth to the other end along a limited rope or cloth belt, sticks the carbon fiber cloth to the reinforcement base surface through glue, ensures that no water is clamped between the carbon fiber cloth and the base material to form a hollow drum, and finally scrapes and presses evenly according to the direction of carbon fibers by using a scraper plate, and ensures that the surface of the stuck carbon fiber cloth is naturally free of the hollow drum; if lapping exists, the middle plastic film at the lapping and overlapping part needs to be uncovered, so that the impregnation glue on one surface and the other surface of the carbon fiber cloth are integrated; and tearing off the other side film about 24 hours after the carbon fiber cloth is pasted.
The preparation method of the dipping glue is as follows, and the example takes the preparation of 30.0kg of underwater dipping glue as an example:
preparing a component A: 6.0kg of JEL60 resin, 8.0kg of 170 resin, 0.5kg of BE toughening agent, 1.4kg of 622 diluent, 0.5kg of KS-150 white carbon black, 1.0kg of SX306B nano active calcium carbonate and 5.1kg of 400-mesh active silica micropowder;
preparing a component B: 3.6kg of 810 curing agent, 3.6kg of 002K curing agent, 0.16kg of K-54 accelerator and 0.14kg of KH-550 coupling agent.
(1) Preparation of component A
Sucking 14.0kg of the mixed resin into a stirring tank, regulating the stirring electric frequency to 16Hz, regulating the rotating speed to 150 r/min, controlling the temperature to be 20-30 ℃, then sucking 0.5kg of BE toughening agent and 1.4kg of 622 diluent, stopping the stirring machine after stirring for 2min, putting 1.0kg of SX306B nano active calcium carbonate and 0.5kg of KS-150 white carbon black, stirring again, opening a material suction switch during stirring, sucking 5.1kg of 400-mesh active silicon micro powder, stirring again for 20min, discharging 2.0kg of the material, returning to a pot, stirring again for 40min until the colloid is uniformly stirred, and stopping the stirring machine.
Then opening a discharge valve of the grinding machine and the stirrer, adjusting the power frequency of the stirring switch to 2Hz, adjusting the rotating speed to 60 r/min, and adjusting the distance between three rollers of the grinding machine to a proper distance so as to realize optimal discharge; after the discharging is finished, stopping the stirring switch, stopping the discharging switch and closing the discharging valve; cleaning the colloid in the discharge pipeline by using a tool, cleaning the colloid leaked from the rubber plate connected by the three-roller machine, and cleaning the colloid on the three rollers of the grinding machine by using a scraper knife; stopping the grinding machine to obtain white paste. And (7) packaging and warehousing.
(2) Production of component B
Adding 7.2kg of mixed curing agent into a stirrer, adding 0.16kg of K-54 accelerator and 0.14kg of KH-550 coupling agent, turning on a switch of the stirrer, stirring at the rotation speed of 600 revolutions per minute at the temperature of 20-30 ℃ for 10min, discharging 1.0kg of the mixture, returning the mixture to a pot, stirring for 10min, turning off the stirrer after the glue solution is uniform, and discharging to obtain yellow liquid.
The prepared underwater impregnating adhesive is tested according to GB/T2567-2008, and the test results are as follows:
the present invention is not limited to the above embodiments, and those skilled in the art can make various equivalent changes and substitutions without departing from the principle of the present invention after learning the content of the present invention, and these equivalent changes and substitutions should be considered as belonging to the protection scope of the present invention.
Claims (5)
1. The construction method for adhering the fiber cloth by the underwater impregnated adhesive is characterized by comprising the following steps of:
s1, base surface treatment: determining the grade and the position of the fiber cloth to be adhered according to the requirements of a design drawing, and washing moss, sludge and impurities on the base surface; distinguishing a range needing to be polished by using a rope or a tying belt, then removing marine organisms and a loose layer on a base surface in the polishing range, polishing off edges and corners of base surface concrete and the surface of the concrete until the base layer is exposed, and finally carrying out underwater impregnation glue or underwater leveling glue repair on the defective concrete surface until the concrete surface is smooth;
s2, blanking: cutting the fiber cloth to be adhered according to the requirement of a design drawing, and preparing two layers of plastic films, wherein the length is greater than the fiber cloth by 100-200 mm, and the width is greater than the fiber cloth by 50 mm;
s3, mixing: weighing the glue A and the glue B according to the weight ratio of 3:1, and stirring at the speed of not more than 300 revolutions until the color and the shape of the mixed glue are uniform to obtain the dipping glue;
s4, prepreg carbon cloth: uniformly coating the prepared impregnating compound on a plastic film by using a scraper according to the length and the width of fiber cloth, repeatedly rolling the coated fiber cloth according to the fiber direction until the impregnating compound is soaked into the fiber cloth, then coating a layer of impregnating compound on the fiber cloth, leveling the coating, overlapping and covering a second layer of plastic film on the fiber cloth, finally wrapping the fiber cloth into small rolls by using a hollow tube according to the trend of fibrils, and immediately putting the rolls into water for later use;
s5, pasting fiber cloth: the constructor takes out the soaked fiber cloth, dives to the pasting position and unfolds the fiber cloth, tears the plastic film of the glue layer close to the base material surface, puts right one end of the fiber cloth and along spacing rope or frenulum, slowly rolls or scrapes the plastic film of the outer layer of the fiber cloth to the other end, scrapes with the scraper blade according to the fibril direction, tears outer plastic film again after pasting fiber cloth 23 ~ 25 hours, accomplishes the fiber cloth and pastes the process promptly.
2. The underwater type dipping glue fiber cloth pasting construction method according to claim 1, characterized in that:
the adhesive A comprises the following components in parts by weight: 13-15 parts of epoxy resin, 0.4-0.6 part of toughening agent, 1.3-1.5 parts of diluent, 0.4-0.6 part of white carbon black, 0.6-1.4 parts of active calcium carbonate and 4.8-5.4 parts of active silicon micro powder;
the B glue comprises the following components in parts by weight: 7.1-7.3 parts of curing agent, 0.1-0.2 part of accelerator and 0.1-0.2 part of coupling agent.
3. The underwater type dipping glue fiber cloth pasting construction method according to claim 2, characterized in that:
the A glue comprises the following components in parts by weight: 6 parts of JEL60 resin, 8 parts of 170 resin, 0.5 part of BE toughening agent, 1.4 parts of 622 diluent, 0.5 part of KS-150 white carbon black, 1 part of SX306B nano active calcium carbonate and 5.1 parts of 400-mesh active silica micropowder;
the glue B comprises the following components in parts by weight: 3.6 parts of 810 curing agent, 3.6 parts of 002K curing agent, 0.16 part of K-54 accelerator and 0.14 part of KH-550 coupling agent.
4. The underwater type dipping glue fiber cloth pasting construction method according to claim 1, characterized in that: the fiber cloth is carbon fiber cloth or aramid fiber cloth or glass fiber cloth or basalt cloth.
5. The underwater type dipping glue fiber cloth pasting construction method according to claim 1, characterized in that: the thickness of the plastic film is 10 filaments.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110160803.3A CN112942889A (en) | 2021-02-05 | 2021-02-05 | Construction method for adhering fiber cloth to underwater impregnated adhesive |
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| CN202110160803.3A CN112942889A (en) | 2021-02-05 | 2021-02-05 | Construction method for adhering fiber cloth to underwater impregnated adhesive |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105925228A (en) * | 2016-06-06 | 2016-09-07 | 北京中德新亚建筑技术有限公司 | Multi-purpose modified epoxy resin adhesive |
| CN106928889A (en) * | 2015-12-30 | 2017-07-07 | 卡本复合材料（天津）有限公司 | Anchoring adhesive and preparation method thereof under a kind of water at low temperature |
| CN107298958A (en) * | 2016-12-30 | 2017-10-27 | 江苏苏博特新材料股份有限公司 | A kind of epoxyn for being applied to moist and underwater environment |
| CN109852313A (en) * | 2019-03-01 | 2019-06-07 | 廊坊金岛奇士胶业有限公司 | A kind of building structure gluing agent suitable for underwater construction |
| CN111662612A (en) * | 2020-07-01 | 2020-09-15 | 浙江鑫球科技有限公司 | Underwater steel bar planting adhesive and preparation method thereof |
| CN111733891A (en) * | 2020-06-28 | 2020-10-02 | 广州东雄建筑工程技术有限公司 | Reinforcing and corrosion preventing method for underwater structure |
-
2021
- 2021-02-05 CN CN202110160803.3A patent/CN112942889A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106928889A (en) * | 2015-12-30 | 2017-07-07 | 卡本复合材料（天津）有限公司 | Anchoring adhesive and preparation method thereof under a kind of water at low temperature |
| CN105925228A (en) * | 2016-06-06 | 2016-09-07 | 北京中德新亚建筑技术有限公司 | Multi-purpose modified epoxy resin adhesive |
| CN107298958A (en) * | 2016-12-30 | 2017-10-27 | 江苏苏博特新材料股份有限公司 | A kind of epoxyn for being applied to moist and underwater environment |
| CN109852313A (en) * | 2019-03-01 | 2019-06-07 | 廊坊金岛奇士胶业有限公司 | A kind of building structure gluing agent suitable for underwater construction |
| CN111733891A (en) * | 2020-06-28 | 2020-10-02 | 广州东雄建筑工程技术有限公司 | Reinforcing and corrosion preventing method for underwater structure |
| CN111662612A (en) * | 2020-07-01 | 2020-09-15 | 浙江鑫球科技有限公司 | Underwater steel bar planting adhesive and preparation method thereof |
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Application publication date: 20210611 |