CN106400703A - No-expansion repairing method for non-structural crack of bridge - Google Patents
No-expansion repairing method for non-structural crack of bridge Download PDFInfo
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- CN106400703A CN106400703A CN201610807228.0A CN201610807228A CN106400703A CN 106400703 A CN106400703 A CN 106400703A CN 201610807228 A CN201610807228 A CN 201610807228A CN 106400703 A CN106400703 A CN 106400703A
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- crack
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- base joint
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
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- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a no-expansion repairing method for a non-structural crack of a bridge and belongs to the technical field of maintenance construction of the bridge. The method comprises the following steps: measuring the crack; treating the crack; washing the crack; filling the crack; coating the crack with a coating layer. According to the expansion-free repairing method disclosed by the invention, by utilizing physical properties of a crack sealant, the crack can be sealed in a way that the crack is filled firstly and coated secondly; the construction is simple and convenient; during a crack repairing process, the crack is not expanded, is hard to expand after being repaired, has certain toughness and compensative shrinkage property, is high in high temperature resistance and freezing and thawing circulation resistance, and is excellent in durability.
Description
Technical field
The invention belongs to bridge inspection and maintenance technical field of construction is and in particular to a kind of bridge non-structural crack no expands repairing
Method.
Background technology
Bridge member crack class disease is one of common disease of bridge, and bridge member crack is with thermal cracking, concrete
Based on the non-structural cracks such as contraction fissure, fracture width is below 0.15 under normal circumstances.Because crack is chronically exposed to
In complex environment, in the presence of extraneous physics, chemical factor, constantly produce and extend, cause concrete carbonization, protective layer stripping
Fall, reinforcement corrosion, make the strength and stiffness of concrete weakened, durability reduces, when serious, even collapse accident occur, danger
The normal use of evil structure, impact bridge service life and bridge security are it is therefore necessary to be controlled by.
Causing further to destroy for avoiding " air water " to enter crack adopts joint seal to process under normal circumstances.Using joint seal
The prescribed limits in the crack processing（The i.e. Breadth Maximum in crack）Should meet《Code for design of concrete structures》Requirement.Generally feelings
Under condition, fracture carries out closing and adopts epoxy resin adhesive, holds because epoxy resin adhesive has aging fast, winter
Shortcoming easy to crack, needs often the crack closed to be checked, workload is big, and joint seal intractability is also relatively simultaneously
Greatly, the characteristic based on epoxy resin adhesive, joint seal effect is bad, and color distortion is big, and appearance is unsightly.
Ji grind SKY-GF type base joint grouting glue be by Hebei Jian Yan Materials Technology Ltd. produce a for concrete
The material of crack repairing, is a kind of A, B bi-component rubber modified epoxy resin class adhesive, by multiple organic and inorganic modified
Material cladding forms.Product has that viscosity is low, mobility and permeability are strong, can inject the wide microcrack of 0.1mm, heat release after hardening
Low, high with the caking ability of crack two wall, shrinkage is little, and elastic modelling quantity is high, anti-aging, media-resistant（Acid, alkali, water）Performance is good, right
Concrete reinforcing steel non-corroding acts on, and high temperature resistant and freeze-thawing resistant circulation ability is strong, and 5 DEG C of -40 DEG C of temperature ranges all can be constructed, Gu
Change speed.A during configuration:B weight is than for 2:1, the finished product mixing is close with concrete color.
Content of the invention
The technical problem to be solved in the invention is to provide a kind of crack repairing effect good, no expands, after repairing during repairing
Crack no longer extends, and the color bridge non-structural crack consistent with former concrete no expands method for repairing and mending.
For solving above-mentioned technical problem, the technical solution adopted in the present invention is：
A kind of bridge non-structural crack no expands method for repairing and mending, comprises the following steps：
A, crack measurement
Fracture width measures, and sees whether fracture width exceedes respective members crack prescribed limits, and fracture width is on rule
Crack below threshold value carries out processing by subsequent step；
B, crack treatment
Fracture both sides carry out dirt of polishing, and form the 5cm width sanding belt centered on crack；
C, Fracture cleaning
Sanding belt is carried out wipe cleaning using cleaning agent acetone；
D, gap perfusion
SKY-GF type base joint grouting glue is ground using Ji and carries out cementation of fissures process, cementation of fissures mode adopts syringe injection system；
E, coating cover layer
Cover layer is coated in the 30-50 minute after the completion of the perfusion of step D gap on sanding belt, coating scrapes, using pressurization, the side of smearing
Formula is carried out, and overburden cover controls in 2-3mm.
Further, before described step C carries out to sanding belt using cleaning agent acetone wiping cleaning, empty using compression
Gas fracture and sanding belt carry out impurity cleaning it is ensured that not having dust and impurity in crack, and using cleaning agent acetone
After sanding belt being carried out wipe cleaning, a few minutes to be dried, then carry out the perfusion of step D gap.
Preferably, coat described in step E grinds SKY-GF type base joint grouting glue, cement, white cement by a certain percentage by Ji
Mix together, during mixing, the component A first cement, white cement and Ji being ground SKY-GF type base joint grouting glue is fully mixed
Conjunction stirs, and is subsequently adding Ji and grinds the B component of SKY-GF type base joint grouting glue and quickly stirs.
Preferably, described Ji grind SKY-GF type base joint grouting glue, cement, white cement part by weight be 4:3:1, wherein Ji is ground
The A of SKY-GF type base joint grouting glue, B component weight are than for 2:1.
Due to employing technique scheme, the technological progress that the present invention obtains is：
The present invention adopts joint seal to process the process of Bridge Crack, and in joint seal before processing, first fracture both sides carry out polishing decontamination
Dirt process, be beneficial to base joint grouting glue, coat can with crack tight bond, strengthen joint seal effect, after polishing, to polishing part with
And crack is carried out, using two ways cleaning, removes impurity and the dust in crack first with compressed air, then use acetone
Remove the dust on surface it is ensured that adhesive surface cleaning, the cementation of fissures using the base joint grouting glue with premium properties, because cementation of fissures adhesiveness is low,
Mobility and permeability are strong, easy construction, can filling gap at short notice each corner, after the completion of the cementation of fissures, in the cementation of fissures
Before gelling is solid, using cover layer, buffed surface is coated, coating method scrapes, using pressurization, the mode of smearing, coating material can be made to enter
Enter crack, be pressed further by base joint grouting glue, make base joint grouting glue filling more abundant, coating material is interpolation cement on the basis of base joint grouting glue
Mix with white cement, because base joint grouting glue color and concrete color are close, add cement and white cement toning, can make to cover
Cap rock is consistent with concrete color, makes more attractive in appearance after crack repairing.Due to the main component in base joint grouting glue and coat all
It is base joint grouting glue, and after base joint grouting glue hardening, heat release is low, high with the caking ability of crack two wall, shrinkage is little, and elastic modelling quantity is high, anti-ageing
Change, media-resistant（Acid, alkali, water）Performance is good, so during crack repairing, crack will not be expanded, is difficult to extend, has after repairing
Certain toughness and compensation shrinkage, high temperature resistant and freeze-thawing resistant circulation ability is strong, excellent in te pins of durability.
Specific embodiment
With reference to embodiment, the present invention is described in further details：
The present invention is that a kind of bridge member non-structural crack no expands method for repairing and mending, and the method is applied to non-crack of transfiniting
（Fracture width meets《Code for design of concrete structures》Require）Closed（Crack closure, also referred to as joint seal）Process.In order to protect
Card sealing effect, inventor carried out contrast experiment to the product of multiple long families, have selected and builds by Hebei that to grind material technology limited
SKY-GF type base joint grouting glue is ground in the Ji that company produces, and the enclosure method of the cooperation present invention is carried out at joint seal to the crack meeting condition
Reason.This joint seal glue color is close with concrete, and shear strength is high, good endurance, and constructing operation is convenient, quick simultaneously.
A kind of bridge non-structural crack no expands method for repairing and mending, comprises the following steps：
A, crack measurement
Fracture width measures, and sees whether fracture width exceedes respective members crack prescribed limits（I.e.《Xoncrete structure sets
Meter specification》Specified in the Breadth Maximum in crack that allowed of concrete component）, fracture width splitting below prescribed limits
Seam carries out processing by subsequent step；
B, crack treatment
Because crack is very narrow, typically maximum is less than 0.3mm（Breadth Maximum）, for ensureing sealing effect, need fracture both sides
Carry out dirt of polishing, then closed, at grinding process, form the 5cm width sanding belt centered on crack；
C, Fracture cleaning
Sanding belt is carried out wipe cleaning using cleaning agent acetone；Because acetone is volatile, can be dried quickly, even if not doing
Dry, being also used as solvent dilution joint seal glue, not affecting sealing effect, if cleaned using water, not only drying time is long, if
Thoroughly it is not dried, is just closed, staying the moisture in gap can damage to the crack closed；
D, gap perfusion
SKY-GF type base joint grouting glue is ground using Ji and carries out cementation of fissures process, cementation of fissures mode adopts syringe injection system；Using injection
Device injection can be to the certain pressure of base joint grouting glue so as to can be with Fast Filling gap；
E, coating cover layer
Cover layer is coated in the 30-50 minute after the completion of the perfusion of step D gap on sanding belt, coating scrapes, using pressurization, the side of smearing
Formula is carried out, and overburden cover controls in 2-3mm.This is in the 30-50 minute after the completion of gap perfusion after the completion of step D is beating
Coat cover layer on grinding belt, refer to 30 minutes start to coat cover layer later, and coated in 20 minutes and complete, so, just have
The time of 30 minutes can allow potting compound sufficiently be permeated, with each corner of more preferable filling.
In order to ensure that the impurity in crack and dust can thoroughly be removed, using cleaning agent acetone, sanding belt is being entered
Before row wipes cleaning, first impurity cleaning is carried out using compressed air fracture and sanding belt, thoroughly remove the ash in crack
Particulate matter that dirt, impurity and polishing produce etc., after sanding belt being carried out using cleaning agent acetone wiping cleaning, re-dry
A few minutes, then carry out gap perfusion.
In order to ensure the performances such as intensity, the toughness of coating material, the coat described in step E grinds SKY-GF type by Ji
Base joint grouting glue, cement, white cement mix together by a certain percentage, during mixing, first cement, white cement and Ji are ground SKY-
The component A of GF type base joint grouting glue carries out being sufficiently mixed stirring, be subsequently adding Ji grind SKY-GF type base joint grouting glue B component quick
Stir.What such order by merging can somewhat extend one section of coating material can coating time.
Consistent with concrete color in order to ensure coat, SKY-GF type base joint grouting glue, cement, white cement are ground in described Ji
Part by weight is 4:3:1, the A of SKY-GF type base joint grouting glue, B component weight are ground than for 2 in wherein Ji:1.Certainly, said ratio
It is more satisfactory proportioning, those skilled in the art can also adopt other proportionings, such as constant in cement, white cement proportioning
In the case of, increase merely or reduce base joint grouting glue, thus changing the proportioning between base joint grouting glue and cement, white cement.Work as the cementation of fissures
The ratio increase of glue is to a certain extent, it is convenient to omit falls the perfusion of step D gap, but using the material of coat, gap is carried out
Perfusion.
Claims (4)
1. a kind of bridge non-structural crack no expands method for repairing and mending, comprises the following steps：
A, crack measurement
Fracture width measures, and sees whether fracture width exceedes respective members crack prescribed limits, and fracture width is on rule
Crack below threshold value carries out processing by subsequent step；
B, crack treatment
Fracture both sides carry out dirt of polishing, and form the 5cm width sanding belt centered on crack；
C, Fracture cleaning
Sanding belt is carried out wipe cleaning using cleaning agent acetone；
D, gap perfusion
SKY-GF type base joint grouting glue is ground using Ji and carries out cementation of fissures process, cementation of fissures mode adopts syringe injection system；
E, coating cover layer
Cover layer is coated in the 30-50 minute after the completion of the perfusion of step D gap on sanding belt, coating scrapes, using pressurization, the side of smearing
Formula is carried out, and overburden cover controls in 2-3mm.
2. bridge non-structural crack according to claim 1 no expand method for repairing and mending it is characterised in that：In described step
Before C carries out to sanding belt wiping cleaning using cleaning agent acetone, impurity is carried out using compressed air fracture and sanding belt
Cleaning is not it is ensured that have dust and impurity in crack, and after sanding belt being carried out using cleaning agent acetone wiping cleaning,
A few minutes are dried, then carry out the perfusion of step D gap.
3. bridge non-structural crack according to claim 1 no expand method for repairing and mending it is characterised in that：Institute in step E
State that coat grinds SKY-GF type base joint grouting glue by Ji, cement, white cement mix together by a certain percentage, during mixing, first will
The component A that SKY-GF type base joint grouting glue is ground in cement, white cement and Ji carries out being sufficiently mixed stirring, and is subsequently adding Ji and grinds
The B component of SKY-GF type base joint grouting glue quickly stirs.
4. bridge non-structural crack according to claim 3 no expand method for repairing and mending it is characterised in that：Described Ji is ground
SKY-GF type base joint grouting glue, cement, the part by weight of white cement are 4:3:1, the A of SKY-GF type base joint grouting glue, B component are ground in wherein Ji
Weight is than for 2:1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610807228.0A CN106400703A (en) | 2016-09-07 | 2016-09-07 | No-expansion repairing method for non-structural crack of bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610807228.0A CN106400703A (en) | 2016-09-07 | 2016-09-07 | No-expansion repairing method for non-structural crack of bridge |
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| CN106400703A true CN106400703A (en) | 2017-02-15 |
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| CN201610807228.0A Pending CN106400703A (en) | 2016-09-07 | 2016-09-07 | No-expansion repairing method for non-structural crack of bridge |
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| JP2014077253A (en) * | 2012-10-09 | 2014-05-01 | Highway Technology Research Center | Device and method for monitoring structure crack, and disconnection gauge |
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| JP2014148834A (en) * | 2013-02-01 | 2014-08-21 | Railway Technical Research Institute | Structure and construction method for repairing and reinforcing vertical-girder and cross-girder joint of existing steel girder |
| CN104674676A (en) * | 2013-12-02 | 2015-06-03 | 黑龙江融德建筑技术开发有限公司 | Short stand column on arch as hinge assembly |
| CN104727232A (en) * | 2015-02-26 | 2015-06-24 | 北京公联信达智能交通技术有限责任公司 | Partial remanufacturing method for repairing longitudinal crack of U-shaped abutment |
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Patent Citations (8)
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| JP2014077253A (en) * | 2012-10-09 | 2014-05-01 | Highway Technology Research Center | Device and method for monitoring structure crack, and disconnection gauge |
| CN102912741A (en) * | 2012-11-06 | 2013-02-06 | 河北工业大学 | Method for reinforcing highway bridge transformed from simple-supported girder into continuous girder |
| KR20140093373A (en) * | 2013-01-16 | 2014-07-28 | 한국유지관리 주식회사 | System for inspecting cable using movable robot |
| JP2014149285A (en) * | 2013-02-01 | 2014-08-21 | Fuji Giken Center Kk | Deterioration degree diagnosis method for floor slab through elastic wave velocity ratio |
| JP2014148834A (en) * | 2013-02-01 | 2014-08-21 | Railway Technical Research Institute | Structure and construction method for repairing and reinforcing vertical-girder and cross-girder joint of existing steel girder |
| CN104674676A (en) * | 2013-12-02 | 2015-06-03 | 黑龙江融德建筑技术开发有限公司 | Short stand column on arch as hinge assembly |
| CN104727232A (en) * | 2015-02-26 | 2015-06-24 | 北京公联信达智能交通技术有限责任公司 | Partial remanufacturing method for repairing longitudinal crack of U-shaped abutment |
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Inventor after: Feng Chong Inventor after: Gao Yan Inventor after: Zhang Chongchong Inventor after: Zhang Xuezhi Inventor after: Zhang Yingfei Inventor after: Ye Yongdi Inventor after: Yin Xuebo Inventor after: Yang Yingyuan Inventor after: Zhang Kuo Inventor after: Wang Jing Inventor after: An Peng Inventor after: Chang Junhui Inventor after: Tao Tao Inventor after: Cui Yan Inventor after: Chen Minguo Inventor after: Chai Ya Inventor after: Jia Shasha Inventor after: Cai Yuwen Inventor after: Yang Fang Inventor after: Liu Tingting Inventor after: Sun Yong Inventor after: Zhao Fang Inventor after: Wang Shuxin Inventor after: Shi Hui Inventor after: Zhang Shiying Inventor after: Liu Tie Inventor after: Hu Lianhua Inventor before: Feng Chong Inventor before: Gao Yan Inventor before: Zhang Chongchong Inventor before: Zhang Xuezhi Inventor before: Zhang Yingfei Inventor before: Ye Yongdi Inventor before: Yin Xuebo Inventor before: Yang Yingyuan Inventor before: Zhang Kuo Inventor before: Wang Jing Inventor before: An Peng Inventor before: Chang Junhui Inventor before: Tao Tao Inventor before: Chen Minguo Inventor before: Chai Ya Inventor before: Jia Shasha Inventor before: Cai Yuwen Inventor before: Yang Fang Inventor before: Liu Tingting Inventor before: Sun Yong Inventor before: Zhao Fang Inventor before: Wang Shuxin Inventor before: Shi Hui Inventor before: Zhang Shiying Inventor before: Liu Tie Inventor before: Hu Lianhua |
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Application publication date: 20170215 |