CN108753224A - A kind of bridge subsection assembly glue and preparation method thereof and construction technology - Google Patents
A kind of bridge subsection assembly glue and preparation method thereof and construction technology Download PDFInfo
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- CN108753224A CN108753224A CN201810388055.2A CN201810388055A CN108753224A CN 108753224 A CN108753224 A CN 108753224A CN 201810388055 A CN201810388055 A CN 201810388055A CN 108753224 A CN108753224 A CN 108753224A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J163/00—Adhesives based on epoxy resins; Adhesives based on derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/004—Additives being defined by their length
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/40—Plastics
Abstract
The invention discloses a kind of bridge subsection assembly glue for belonging to chemical building material technical field and preparation method thereof and construction technologies.The bridge subsection assembly glue is 3 by mass ratio:1 two groups of A, B is grouped as；The component A is made of raw materials such as liquid bisphenol A epoxy resin, nano silicon dioxide graft modification epoxy resin, nano-rubber modified epoxy, epoxy active diluent, coupling agent 1, antifoaming agent, dispersant, active micro silicon powder, organo montmorillonite, calcium sulfate crystal whiskers, magnetic iron powder and thixotropic agent；The B component is made of raw materials such as compounding amine curing agent, curing accelerator, coupling agent 2, antifoaming agent, dispersant, active micro silicon powder, organo montmorillonite, calcium sulfate crystal whiskers, magnetic iron powder, thixotropic agent and carbon blacks.Compared with prior art, the present invention can be obviously improved bridge subsection assembling construction quality and convenience for construction, particularly suitable for the large bridge section assembling engineering more demanding to assembled glue mechanical property and workability.
Description
Technical field
The invention belongs to chemical building material technical fields, and in particular to a kind of high-performance bridge section assembling glue and its system
Preparation Method and construction technology.
Background technology
Bridge prefabrication section assembling has become the advanced construction method of large-span concrete Prestressed Continuous bridge at present.Closely
Nian Lai, China have built a large amount of highway and Bridges on Urban Rail Transit using the technology, as the good bridge that continues of Hangzhou Wan, Nanjing are long
The fourth-largest bridge north and south access bridge in river, Soviet Union's Changjiang River bridge, Guangzhou Metro Line 4 etc., have accumulated certain design and construction experience, but
As a whole, development of the technology in China still relatively lags behind, and also many problems need to solve, such as high-performance section assembling
Glue technology of preparing, Large-scale Bridge Erector equipment technology and matching equipment and technique etc..
Section assembling glue be for ensure after assembly that pontic has good globality and in bridge concrete section assembling mistake
A kind of sqtructural adhesive used in journey.It applies and scrapes in bridge subsection Mosaic face, so that two adjacent segments is bonded and is integrated, together
When seal between two segments, and transmit load, make prestressing force that can stablize and be muchly applied to beams of concrete.It for
The globality of bridge structure and prestressed validity play critically important effect.At present at home in large bridges construction
The section assembling glue used is mainly the product of Switzerland Sika companies and Hunts-man companies, the satisfaction of domestic maturation not yet
The product of section assembling construction requirement especially meets the product of construction process requirement.To push Bridges in Our Country prefabricated subsection to spell
The development of dress technology, to the technical monopoly of section assembling glue, it is China to allow the advanced technology preferably for breaks through foreign company
Science of bridge building service carries out high-performance bridge section assembling glue Study on Preparation Technology and has important practical significance.
Invention content
The present invention is intended to provide a kind of high property that the Hao ﹑ elasticity modulus great ﹑ thixotropic properties of adhesion strength Gao ﹑ mechanical properties are excellent
Energy bridge subsection assembly glue and preparation method thereof and construction technology, to meet bridge prefabrication section assembling technology to high-performance assembly
The demand of glue.
Bridge subsection assembly glue of the present invention, it is grouped as two groups by A, B, and mass ratio is component A:B component=3:
1；After component A and B component are weighed accurately by quality proportioning, it is uniformly mixed up to bridge subsection assembly glue.
Component A and B component are as follows by the formula composition of mass fraction：
Component A：
Liquid bisphenol A Huan Yang Shu Zhi ﹑ nano silicon dioxide graft modification epoxy resin and nano-rubber change in above-mentioned formula
Property total 100 parts of epoxy resin.
B component：
The liquid bisphenol A epoxy resin is the mixture of E-44 or E-51 or E-44 and E-51, preferably E-44 and E-51
In mass ratio 1:The mixture of 1 composition；
The nano silicon dioxide graft modification epoxy resin be by nanometer silicon dioxide particle surface enrichment hydroxyl with
Epoxy group in epoxy molecule structure is obtained by chemically reacting grafting, and wherein nanometer silicon dioxide particle grain size is 20-
40nm, epoxy resin are liquid bisphenol F type epoxy resin, and nano silicon dioxide mass fraction is 2-4%；
The nano-rubber modified epoxy is HH-080N series of products；
The epoxy active diluent is bis-epoxy reactive diluent, preferably diglycidylaniline；
The coupling agent 1 is silane coupling agent KH560, and coupling agent 2 is Silane coupling agent KH550；
The compounding amine curing agent is that fatty amine and aromatic amine compound, and preferably modified fatty amine QS-1622T and is changed
Property aromatic amine QS-6801 in mass ratio 3:1 compounds；
The curing accelerator is one kind in bisphenol-A, resorcinol and DMP-30；
The antifoaming agent is BYK-066N；
The dispersant is BYK-163；
The active micro silicon powder is through 400 surface-treated mesh torispherical silica powders of silane coupling agent and the quasi- ball of 800 mesh
Shape silicon powder, and the two mass ratio is 2:1；
The organo montmorillonite is the montmorillonite using cationic surfactant octadecyl trimethyl quaternary ammonium salt treatment；
The calcium sulfate crystal whiskers are 1-8 μm of average diameter being modified through silane coupling agent surface, average length 50-200 μ
The activared carbon sulfur calcium pyroborate of m；
The magnetic iron powder is 400 mesh magnetite powders；
The thixotropic agent is surface by the processed hydrophobic type gas phase silica of organic matter.
The preparation method of bridge subsection assembly glue of the present invention, the specific steps are：
1) preparation of component A：Each raw material is weighed by the proportion speed, first by liquid bisphenol A Huan Yang Shu Zhi ﹑ nanometers two
The raw materials such as silica graft modification Huan Yang Shu Zhi ﹑ nano-rubbers modified epoxies and epoxy active diluent sequentially add planet
It is stirred in formula blender 5-8 minutes；Then planet strrier is added in the raw materials such as coupling agent 1, antifoaming agent and dispersant
In be stirred 3-5 minutes；Then there is machine to cover active silicon powder ﹑ and take off the solid-states such as soil ﹑ sulphur acid calcium crystalline substance palpus ﹑ magnetic iron powder ﹑ thixotropic agent
The pre-composition of raw material in batches, is repeatedly added in planet strrier by amount is mixed -80 minutes 60 minutes on a small quantity；Finally will
Material in planet strrier after three-roll grinder is ground package storage up to component A.
2) preparation of B component：Each raw material is weighed by the proportioning, it first will compounding amine class Guization Ji ﹑ solidification Cu Jin Ji ﹑ idols
The raw materials such as connection agent 2, antifoaming agent, dispersant, which are added in planet strrier, to be stirred 3-5 minutes；Then by active silicon powder ﹑
The pre-composition of the solid feeds such as You machines Meng Tuo Tu ﹑ Liu acid Gai Jing Xu ﹑ Ci Tie Fen ﹑ thixotropic agent and carbon black in batches, on a small quantity repeatedly by
Amount is added in planet strrier and is mixed -60 minutes 50 minutes；Finally the material in planet strrier is ground through three rollers
Package storage is up to B component after grinding machine grinding.
3) preparation of bridge subsection assembly glue：First in mass ratio A:B=3:1 precise A ﹑ B component aequums, then
A ﹑ B components are mixed, keep A ﹑ B component mixs uniform using artificial stirring or mechanical agitation, when mixture uniform color is unanimously
It can determine that and be uniformly mixed to get high-performance bridge section assembling glue.
The planet strrier carries dispersion impeller and heating and heat-insulating device, and dispersion disk rotating speed is set as 1000-
1200rpm, temperature setting are 40-60 DEG C；
The pre-composition of the solid feed is to be carried out tentatively mixing institute before planet strrier is added by solid feed
, it is uniformly mixed in advance convenient for solid feed, shortens the time for mixing dispersion in planet strrier, while avoiding thixotropic agent
Being added at one time in planet strrier causes material viscosity increased dramatically, and is more than blender maximum power；
Material in the planet strrier package storage after three-roll grinder is ground, grinding number are 2 times.
The construction technology of bridge subsection assembly glue of the present invention, the specific steps are：
1) bridge prefabrication section assembling scheme determines：According to design requirement, Precast Concrete Segmental Bridges embodiment is determined.
2) installation and debugging bridge machine：The transport of bridge box and beam prefabrication phase is in place, and it is assembled to prepare lifting by confirmation sequence.
3) box beam Mosaic face is cleaned：Powdering layer should be cut before the splicing of structure Precast Concrete Box Girder, grease, dirt loosen
Stone, loose structure, until fresh, the solid concrete base layer of exposure.Then clast, floating dust are blown off with compressed air, finally with third
Ketone solvent wipes Mosaic face.
4) examination, adjustment are spelled in segment：Prefabricated subsection is lifted by crane, is spelled with assembled block examination.It is first tentatively aligned, then further
It rises and carries out accurate adjustment.After requirement qualification is spelled in examination, range estimation splicing seams width is to control different parts daub thickness, locking splicing angle
Afterwards, lifting block is translated into 30-50cm, waits for gluing.
5) match glue：According to the glue-spread estimated, according to mass ratio A:B=3：1 proportioning is by A, B component in clean container
In stir evenly, until color uniformity.Whipping process should avoid introducing air as possible, use flat tool glue mixing as possible,
Extend usage time convenient for heat dissipation.
6) splice surface coating：Splicing face is docked at two brushes high-performance bridge section assembling glue, thickness 1- simultaneously
3mm, when examination is spelled the position of slit width can appropriate overbrushing, when frictioning will from below to up, direction it is consistent, pays attention to keeping uniformly.If needing
Quickening progress multiple working faces can scratch simultaneously simultaneously.In addition, it is necessary to paste the sealing ring of high-compressibility in prestressing force nozzle.
7) formally splice and apply interim prestressing force：By to be spliced section of gluing and the formal positioning of splice sections is to spelling,
Apply the interim prestressing force of about 0.2-0.3MPa in two segment top, bottom plate, two beam sections is made to collapse, compress, piece width must be on the left sides 1mm
The right side, while ensureing that piece excessive glue, stickup are closely knit.
8) excessive glue and solidification are cleared up：Clean piece excessive glue is scraped, confirms that each pore overflow adhesive blocks, covers rain-proof.Cured
Cheng Buke is disturbed.
After bridge subsection assembly glue mixes, coating process need to be completed in 60min, need to complete formally to spell in 90min
Connect and apply interim sequence of prestressing.Solidification process can be room temperature curing 16-24h, and microwave radiation solidification, microwave can also be used
Radiant power 100-500W, intermittent time 20-60s, interval cure 40-80min.
Compared with prior art, the invention has the advantages that：
1) thixotropic property is excellent, saves glue consumption.Thixotroping system of the present invention is made of three parts：A. part of matrix resin is adopted
With nano-material modified epoxy resin, by the surface characteristic of nano material, high-specific surface area and nanometer size effect make epoxy
Resin has preferable thixotropy；B. filler is made using the good active micro silicon powder of grading and with thixotropic organo montmorillonite
Colloidal dispersion has preferable thixotropy；C. thixotropic agent using surface by the processed hydrophobic type gas phase silica of organic matter,
Thixotropic property is more preferable.It is acted synergistically by above-mentioned three parts, colloidal thixotopic is had excellent performance, easy for construction, and reduction is lost with glue, section
About glue consumption.
2) mechanical strength is high, and modulus is high, good toughness.The present invention uses nano silicon dioxide graft modification epoxy resin conduct
Part of matrix material, using the high-specific surface area of nanometer silicon dioxide particle, the characteristics such as high-modulus and nanometer size effect can be shown
It writes and promotes colloidal materials mechanical strength；Inorganic nano silica and organic nano rubber composite toughening system are used simultaneously, are made
Inorganic nanoparticles toughening mechanism and rubber elastomer toughening mechanism are existed simultaneously in colloid, toughening effect is apparent, and springform
Amount is high.
3) impact resistance and anti-fatigue ability are strong.The present invention is multiple using fibre reinforced materials (calcium sulfate crystal whiskers) and nanometer
Condensation material (organo montmorillonite, nano silicon dioxide, nano-rubber) acts synergistically, and makes colloid when bearing extraneous stress, passes through
The forms such as the deformation of microstructure or interface peel substantially absorb outside energy, therefore colloid shock resistance and anti-fatigue performance
It is high.
4) operable time is long, construction environment wide temperature range, easy for construction.Curing system of the present invention using fatty amine and
Aromatic amine compounds curative systems, and operable time is long, and solidfied material elasticity modulus is high；It is solid that microwave radiation can also be used in solidification process
Change, can also complete to cure at low ambient temperatures, construction environment wide temperature range is easy for construction.
5) high with beam sections bonding interface intensity, durability is good.Diluent of the present invention uses bis-epoxy reactive diluent, both
Adhesive viscosity can be effectively reduced, penetrating power of the adhesive to beam sections bonding interface is improved, it is strong to improve interfacial adhesion
Degree, and colloid crosslink density can be improved, gel strength is improved, therefore bonding interface durability is good.
Specific implementation mode
For a better understanding of the present invention, with reference to the embodiment content that the present invention is furture elucidated, but the present invention
Content is not limited to the following examples.
Embodiment 1：
Bridge subsection assembly glue, it is 3 by mass ratio:1 two groups of A, B is grouped as.
Component A is as follows by the formula composition of mass fraction：
B component is as follows by the formula composition of mass fraction：
Nano-rubber modified epoxy is the HH- of the concentric industry development Co., Ltd production in Zhuzhou in the component A
0803 product.
Embodiment 2：
Bridge subsection assembly glue, it is 3 by mass ratio:1 two groups of A, B is grouped as.
Component A is as follows by the formula composition of mass fraction：
B component is as follows by the formula composition of mass fraction：
Nano-rubber modified epoxy is the HH- of the concentric industry development Co., Ltd production in Zhuzhou in the component A
0801 product.
Embodiment 3：
Bridge subsection assembly glue, it is 3 by mass ratio:1 two groups of A, B is grouped as.
Component A is as follows by the formula composition of mass fraction：
B component is as follows by the formula composition of mass fraction：
Nano-rubber modified epoxy is the HH- of the concentric industry development Co., Ltd production in Zhuzhou in the component A
0802 product.
Embodiment 4：
High-performance bridge section assembling glue, it is 3 by mass ratio:1 two groups of A, B is grouped as.
Component A is as follows by the formula composition of mass fraction：
B component is as follows by the formula composition of mass fraction：
Nano-rubber modified epoxy is the HH- of the concentric industry development Co., Ltd production in Zhuzhou in the component A
080N series of products.
Embodiment 5：
High-performance bridge section assembling glue, it is 3 by mass ratio:1 two groups of A, B is grouped as.
Component A is as follows by the formula composition of mass fraction：
B component is as follows by the formula composition of mass fraction：
Nano-rubber modified epoxy is the HH- of the concentric industry development Co., Ltd production in Zhuzhou in the component A
080N series of products；The epoxy active diluent is diglycidylaniline.
In above-described embodiment 1-5, the bridge subsection assembly glue is that component A and B component press quality proportioning 3:1 weighs accurately
Afterwards, it is uniformly mixed up to bridge subsection assembly glue.
The nano silicon dioxide graft modification epoxy resin be by nanometer silicon dioxide particle surface enrichment hydroxyl with
Epoxy group in epoxy molecule structure is obtained by chemically reacting grafting, and wherein nanometer silicon dioxide particle grain size is 20-
40nm, epoxy resin are liquid bisphenol F type epoxy resin, and nano silicon dioxide mass fraction is 4%；
The compounding amine curing agent is modified fatty amine QS-1622T and modified aromatic amine QS-6801 in mass ratio 3:1
It compounds；
The active micro silicon powder is through 400 surface-treated mesh torispherical silica powders of silane coupling agent and the quasi- ball of 800 mesh
Shape silicon powder, and the two mass ratio is 2:1；
The organo montmorillonite is the montmorillonite using cationic surfactant octadecyl trimethyl quaternary ammonium salt treatment；
The calcium sulfate crystal whiskers are 1-8 μm of average diameter being modified through silane coupling agent surface, average length 50-200 μ
The activared carbon sulfur calcium pyroborate of m；
The magnetic iron powder is 400 mesh magnetite powders；
The thixotropic agent is surface by the processed hydrophobic type gas phase silica of organic matter.
The preparation method of the bridge subsection assembly glue, the specific steps are：
1) preparation of component A：Each raw material is weighed by the proportion speed, first by liquid bisphenol A Huan Yang Shu Zhi ﹑ nanometers two
Silica graft modification Huan Yang Shu Zhi ﹑ nano-rubbers modified epoxies and epoxy active diluent sequentially add planetary stirring
It is stirred in device 5-8 minutes；Then coupling agent 1, antifoaming agent and dispersant are added in planet strrier and are stirred 3-5
Minute；Then there is machine to cover active silicon powder ﹑ and take off the pre-composition of soil ﹑ sulphur acid calcium crystalline substance palpus ﹑ magnetic iron powder ﹑ thixotropic agent in batches, on a small quantity
It is repeatedly added in planet strrier and is mixed 80 minutes by amount；Finally the material in planet strrier is ground through three rollers
Package storage is up to component A after machine grinding.
2) preparation of B component：Each raw material is weighed by the proportioning, it first will compounding amine class Guization Ji ﹑ solidification Cu Jin Ji ﹑ idols
Connection agent 2, antifoaming agent, dispersant are added in planet strrier and are stirred 5 minutes；Then the active organic illiteracies of silicon powder ﹑ are taken off
In batches, planet strrier repeatedly is added by amount on a small quantity in the pre-composition of Tu ﹑ Liu acid Gai Jing Xu ﹑ Ci Tie Fen ﹑ thixotropic agent and carbon black
It is middle to be mixed 50 minutes；Finally by the material in planet strrier after three-roll grinder is ground package storage up to B groups
Point.
3) preparation of bridge subsection assembly glue：First in mass ratio A:B=3:1 precise A ﹑ B component aequums, then
A ﹑ B components are mixed, keep A ﹑ B component mixs uniform using artificial stirring or mechanical agitation, when mixture uniform color is unanimously
It can determine that and be uniformly mixed to get high-performance bridge section assembling glue.
The planet strrier carries dispersion impeller and heating and heat-insulating device, and dispersion disk rotating speed is set as 1200rpm, temperature
It is set as 60 DEG C；
The pre-composition of the solid feed is to be carried out tentatively mixing institute before planet strrier is added by solid feed
, it is uniformly mixed in advance convenient for solid feed, shortens the time for mixing dispersion in planet strrier, while avoiding thixotropic agent
Being added at one time in planet strrier causes material viscosity increased dramatically, and is more than blender maximum power；
Material in the planet strrier package storage after three-roll grinder is ground, grinding number are 2 times.
The construction technology of high-performance bridge section assembling glue of the present invention, the specific steps are：
1) bridge prefabrication section assembling scheme determines：According to design requirement, Precast Concrete Segmental Bridges embodiment is determined.
2) installation and debugging bridge machine：The transport of bridge box and beam prefabrication phase is in place, and it is assembled to prepare lifting by confirmation sequence.
3) box beam Mosaic face is cleaned：Powdering layer should be cut before the splicing of structure Precast Concrete Box Girder, grease, dirt loosen
Stone, loose structure, until fresh, the solid concrete base layer of exposure.Then clast, floating dust are blown off with compressed air, finally with third
Ketone solvent wipes Mosaic face.
4) examination, adjustment are spelled in segment：Prefabricated subsection is lifted by crane, is spelled with assembled block examination.It is first tentatively aligned, then further
It rises and carries out accurate adjustment.After requirement qualification is spelled in examination, range estimation splicing seams width is to control different parts daub thickness, locking splicing angle
Afterwards, lifting block is translated into 30-50cm, waits for gluing.
5) match glue：According to the glue-spread estimated, according to mass ratio A:B=3：1 proportioning is by A, B component in clean container
In stir evenly, until color uniformity.Whipping process should avoid introducing air as possible, use flat tool glue mixing as possible,
Extend usage time convenient for heat dissipation.
6) splice surface coating：Splicing face is docked at two brushes high-performance bridge section assembling glue, thickness 1- simultaneously
3mm, when examination is spelled the position of slit width can appropriate overbrushing, when frictioning will from below to up, direction it is consistent, pays attention to keeping uniformly.If needing
Quickening progress multiple working faces can scratch simultaneously simultaneously.In addition, it is necessary to paste the sealing ring of high-compressibility in prestressing force nozzle.
7) formally splice and apply interim prestressing force：By to be spliced section of gluing and the formal positioning of splice sections is to spelling,
Apply the interim prestressing force of about 0.2-0.3MPa in two segment top, bottom plate, two beam sections is made to collapse, compress, piece width must be on the left sides 1mm
The right side, while ensureing that piece excessive glue, stickup are closely knit.
8) excessive glue and solidification are cleared up：Clean piece excessive glue is scraped, confirms that each pore overflow adhesive blocks, covers rain-proof.Cured
Cheng Buke is disturbed.
After the high-performance bridge section assembling glue mixes, coating process need to be completed in 60min, it need to be in 90min
Interim sequence of prestressing is spliced and applied to completion formally.Solidification process is that room temperature curing for 24 hours, or using microwave radiation cures, micro-
Wave radiation power 400W, intermittent time 30s, interval cure 60min.
High-performance bridge section assembling colloidality made from embodiment 1-5 can test result is as follows：
Claims (8)
1. a kind of bridge subsection assembly glue, which is characterized in that it is 3 by mass ratio:1 two groups of A, B is grouped as；Component A and B groups
Divide after being weighed accurately by quality proportioning, is uniformly mixed up to high-performance bridge section assembling glue, component A and B component by matter
The formula composition for measuring number is as follows：
Component A：
Liquid bisphenol A Huan Yang Shu Zhi ﹑ nano silicon dioxide graft modification epoxy resin and nano-rubber are modified ring in above-mentioned formula
Oxygen resin is 100 parts total；
B component：
2. bridge subsection assembly glue according to claim 1, which is characterized in that
The liquid bisphenol A epoxy resin is the mixture of E-44 or E-51 or E-44 and E-51, and preferably E-44 and E-51 press matter
Measure ratio 1:The mixture of 1 composition；
The nano silicon dioxide graft modification epoxy resin is the hydroxyl and epoxy by nanometer silicon dioxide particle surface enrichment
Epoxy group in resinous molecular structure is obtained by chemically reacting grafting, and wherein nanometer silicon dioxide particle grain size is 20-40nm,
Epoxy resin is liquid bisphenol F type epoxy resin, and nano silicon dioxide mass fraction is 2-4%；
The nano-rubber modified epoxy is HH-080N series of products；
The epoxy active diluent is bis-epoxy reactive diluent, preferably diglycidylaniline；
The coupling agent 1 is silane coupling agent KH560, and coupling agent 2 is Silane coupling agent KH550；
The compounding amine curing agent is that fatty amine and aromatic amine compound, preferably modified fatty amine QS-1622T and modified virtue
Fragrant amine QS-6801 in mass ratio 3:1 compounds；
The curing accelerator is one kind in bisphenol-A, resorcinol and DMP-30；
The antifoaming agent is BYK-066N；
The dispersant is BYK-163；
The active micro silicon powder is through 400 surface-treated mesh torispherical silica powders of silane coupling agent and 800 mesh torispherical silicon
Micro mist, and the two mass ratio is 2:1；
The organo montmorillonite is the montmorillonite using cationic surfactant octadecyl trimethyl quaternary ammonium salt treatment；
The calcium sulfate crystal whiskers are 1-8 μm of average diameter being modified through silane coupling agent surface, 50-200 μm of average length
Activared carbon sulfur calcium pyroborate；
The magnetic iron powder is 400 mesh magnetite powders；
The thixotropic agent is surface by the processed hydrophobic type gas phase silica of organic matter.
3. the preparation method of bridge subsection assembly glue according to claim 1 or 2, which is characterized in that the specific steps are：
1) preparation of component A：Each raw material is weighed by the proportion speed, first by liquid bisphenol A Huan Yang Shu Zhi ﹑ nanometer titanium dioxides
Silicon graft modification Huan Yang Shu Zhi ﹑ nano-rubbers modified epoxies and epoxy active diluent sequentially add in planet strrier
It is stirred 5-8 minutes；Then coupling agent 1, antifoaming agent and dispersant are added in planet strrier and are stirred 3-5 points
Clock；Then in batches, row is added in the pre-composition for active silicon powder ﹑ being had the de- soil ﹑ sulphur acid calcium crystalline substance palpus ﹑ magnetic iron powder ﹑ thixotropic agent of machine illiteracy
It is mixed -80 minutes 60 minutes in planetary blender；Finally the material in planet strrier is ground through three-roll grinder
Package storage is up to component A afterwards；
2) preparation of B component：Each raw material is weighed by the proportioning, compounding amine class Guization Ji ﹑ are cured into Cu Jin Ji ﹑ coupling agents first
2, antifoaming agent, dispersant are added in planet strrier and are stirred 3-5 minutes；Then there is machine to cover active silicon powder ﹑ and take off soil ﹑
The pre-composition of Liu acid Gai Jing Xu ﹑ Ci Tie Fen ﹑ thixotropic agent and carbon black be added in batches in planet strrier be mixed 50 minutes-
60 minutes；Finally by the material in planet strrier after three-roll grinder is ground package storage up to B component；
3) preparation of high-performance bridge section assembling glue：First in mass ratio A:B=3:1 precise A ﹑ B component aequums, so
A ﹑ B components are mixed afterwards, keep A ﹑ B component mixs uniform using artificial stirring or mechanical agitation, when mixture uniform color is consistent
It can determine that and be uniformly mixed to get bridge subsection assembly glue.
4. the preparation method of bridge subsection assembly glue according to claim 3, which is characterized in that the planet strrier
With dispersion impeller and heating and heat-insulating device, dispersion disk rotating speed is set as 1000-1200rpm, and temperature setting is 40-60 DEG C.
5. the construction technology of bridge subsection assembly glue according to claim 1 or 2, which is characterized in that the specific steps are：
1) bridge prefabrication section assembling scheme determines：According to design requirement, Precast Concrete Segmental Bridges embodiment is determined；
2) installation and debugging bridge machine：The transport of bridge box and beam prefabrication phase is in place, and it is assembled to prepare lifting by confirmation sequence；
3) box beam Mosaic face is cleaned：Should cut powdering layer before the splicing of structure Precast Concrete Box Girder, grease, dirt, loosen stone,
Loose structure, until fresh, the solid concrete base layer of exposure, then blows off clast, floating dust with compressed air, finally use acetone solvent
Wipe Mosaic face；
4) examination, adjustment are spelled in segment：Lift by crane prefabricated subsection, spell with assembled block examination, first tentatively aligned, then again together into
Row accurate adjustment；After examination spelling requires qualification, range estimation splicing seams width is to control different parts daub thickness, will after angle is spliced in locking
It lifts block and translates 30-50cm, wait for gluing；
5) match glue：According to the glue-spread estimated, according to mass ratio A:B=3：1 proportioning stirs A, B component in clean container
It mixes uniformly, until color uniformity, whipping process should avoid introducing air, be extended convenient for heat dissipation using flat tool glue mixing
Usage time；
6) splice surface coating：Splicing face is docked at two brushes bridge subsection assembly glue simultaneously, thickness 1-3mm, when frictioning
Will from below to up, direction it is consistent, keep uniform, the sealing ring of high-compressibility in addition pasted in prestressing force nozzle；
7) formally splice and apply interim prestressing force：By to be spliced section of gluing and the formal positioning of splice sections is to spelling, two
Segment top, bottom plate apply the interim prestressing force of 0.2-0.3MPa, so that two beam sections collapsed, compressed, piece width 1mm, while ensureing to spell
Seam excessive glue, stickup are closely knit；
8) excessive glue and solidification are cleared up：Clean piece excessive glue is scraped, confirms that each pore overflow adhesive blocks, covers rain-proof, solidification process is not
It can disturb.
6. the construction technology of bridge subsection assembly glue according to claim 5, which is characterized in that the bridge subsection is spelled
After dress glue mixes, coating process need to be completed in 60min, need to complete formally to splice and apply interim prestressing force in 90min
Process.
7. the construction technology of high-performance bridge section assembling glue according to claim 5, which is characterized in that the solidification
Process is room temperature curing 16-24h.
8. the construction technology of high-performance bridge section assembling glue according to claim 5, which is characterized in that solidification process is adopted
Cured with microwave radiation, microwave irradiation power 100-500W, intermittent time 20-60s, interval cures 40-80min.
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| CN110158487A (en) * | 2019-06-04 | 2019-08-23 | 中铁九局集团第七工程有限公司 | It is glued assembling construction engineering method in single-track railway simple supported box beam segment |
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| CN112813804A (en) * | 2020-12-31 | 2021-05-18 | 山西省交通科技研发有限公司 | Underwater pier protection system based on solid waste recycling |
| CN115340839A (en) * | 2022-09-16 | 2022-11-15 | 成都京水基础科技有限公司 | Environment-friendly epoxy grouting material and preparation method thereof |
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