CN106401204A - Composite strengthening method through fiber-reinforced high-damping polymer concrete coated with carbon fiber cloth - Google Patents
Composite strengthening method through fiber-reinforced high-damping polymer concrete coated with carbon fiber cloth Download PDFInfo
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- CN106401204A CN106401204A CN201610801765.4A CN201610801765A CN106401204A CN 106401204 A CN106401204 A CN 106401204A CN 201610801765 A CN201610801765 A CN 201610801765A CN 106401204 A CN106401204 A CN 106401204A
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- concrete
- damping polymer
- fiber reinforcement
- fiber
- polymer concrete
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Classifications
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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
- E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- 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
- E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
- E04G2023/0251—Increasing or restoring the load-bearing capacity of building construction elements by using fiber reinforced plastic elements
Abstract
The invention discloses a composite strengthening method through fiber-reinforced high-damping polymer concrete coated with carbon fiber cloth. The composite strengthening method comprises the following steps that the outer surface of an original concrete beam is removed, and thus the structural layer is exposed to reach the aggregate face of the original concrete beam; paying off, drilling and hole cleaning are conducted on the aggregate face of the original concrete beam, shear pins are embedded in through anchor adhesive, and a reinforcing mesh is bound; after an interface agent is smeared on the aggregate face of the original concrete beam, a fiber-reinforced high-damping polymer concrete material is smeared to reach the designed thickness; and after maintenance, a binder is brushed on the surface of a fiber-reinforced high-damping polymer concrete reinforced layer, the carbon fiber cloth is pasted, and reinforcement of the original concrete beam is completed. According to the composite strengthening method, the good deformability and anti-seismic energy dissipation ability of the fiber-reinforced high-damping polymer concrete and superhigh strength of the carbon fiber cloth are used, thus the sectional dimension change is small, the influences on the structure clearance and the appearance are small, the overall anti-seismic property is good, the structure is simple, construction is convenient, and popularization is easy.
Description
Technical field
The present invention relates to the Reinforcement Technology field of existing building structure, specifically a kind of composite consolidation layer with former
Beams of concrete being capable of co-ordination and little, little to structure headroom and appearance effects, the overall anti-seismic performance of sectional dimension change is good
Fiber reinforcement high-damping polymer concrete outsourcing carbon cloth composite reinforcing method.
Background technology
Due to natural causes such as material aging, environmental attacks, construction such as malfunctions, uses inferior materials and turns out substandard goods at the human factor, functional requirement
Change and the effect of the disaster such as fire, earthquake, a large amount of houses need to transform.If taking the mode pushing over reconstruction, costly it is
The current economic conditions of China are not allowed, and are on the basis of correct evaluation compared with reasonable manner, carry out maintenance and reinforcement.Therefore, both
There is the problem that the maintenance of building structure, reinforcing are each state all very concerns at present.
Building structure strengthening method widely used at present mainly has：Concrete in tension area adding reinforcement method；Apply external
Electrothermal prestressing；Increase member section method；Reinforced with external steel encased；Reinforcement by sticking of sheets；Externally bonded FRP reinforcement method for strengthening.These reinforcement means from
The bearing capacity of structure can be improved to a certain extent, improve anti-seismic performance, but respectively have deficiency:Apply external prestressing method, outsourcing
Steel method for strengthening is complicated due to anchorage node area stress, and Construction treatment is relatively difficult, thus higher to construction requirement；Tensile region increases
Mend reinforcing bar, reinforcement by sticking of sheets because steel expose easy-to-rust so the larger area of humidity cannot be applied to；Increase member section
Although method does not have that node processing is complicated and steel corrosion, it is net that depth of section increase can affect attractive in appearance and structure
Empty；Although the FRP method for strengthening easy construction being widely used at present, because FRP ductility itself is poor, therefore easily there is FRP end
The stripping damage in portion, instream factor is only 30%, and the malformation hydraulic performance decline after reinforcing, and is unfavorable under geological process
Power consumption.
Content of the invention
The purpose of the present invention is the problem existing for prior art, provides a kind of composite consolidation layer and former beams of concrete energy
Enough co-ordinations and the fiber reinforcement height that sectional dimension change is little, little to structure headroom and appearance effects, overall anti-seismic performance is good
Damping materials concrete outsourcing carbon cloth composite reinforcing method.
The purpose of the present invention solves by the following technical programs：
A kind of fiber reinforcement high-damping polymer concrete outsourcing carbon cloth composite reinforcing method it is characterised in that：The method
Step as follows：
A, former beams of concrete are processed：Remove the outer surface of former beams of concrete so that the structure sheaf of former beams of concrete exposes and reaches
Its aggregate face；
B, colligation reinforcement：Unwrapping wire, boring, borehole cleaning on the aggregate face of former beams of concrete, with anchoring adhesive implantation shear pin simultaneously
Assembling reinforcement net is as the skeleton of composite consolidation layer；
C, smear fiber reinforcement high-damping polymer concrete material：Apply after smearing interfacial agents on the aggregate face of former beams of concrete
Smear fiber reinforcement high-damping polymer concrete material and reach design thickness；
D, affixing carbon fabric：After maintenance fiber reinforcement high-damping polymer concrete back-up coat external coating binding agent simultaneously
Affixing carbon fabric, that is, complete the reinforcing to former beams of concrete.
Described step（a）In former beams of concrete process and need to pick the surface decoration layer of former beams of concrete, make former mixed
The concrete of solidifying Tu Liang exposes, and then removes the impurity of xoncrete structure layer surface, and dabbing processes and reaches coagulation simultaneously
The aggregate face of soil structure layer.
Described step（b）In boring, the specific requirement of borehole cleaning be：Rig, drill bit and substrate surface must be ensured during boring
Vertical accurate with depth size to ensure aperture；First with firm brush borehole cleaning during borehole cleaning, then wipe hole wall three times with staple, finally use
Degreasing staple dips in acetone and wipes three times, until the disintegrating slag in boring and break flour are cleaned out completely.
If not carrying out bar planting construction at most 6 hours after borehole cleaning, aperture should be closed.
Described step（b）In injecting glue, the specific requirement of bar planting be：Adhesive pouring nozzle is stretched into bottom hole, injection once retreats one
Under to discharge hole air, in the hole injecting glue reach 80%, with guarantee glue do not outflow and injecting glue terminate after should bar planting immediately；
Shear pin is rotating slowly and is inserted to bottom hole in order to avoid bubble occurs.
Described step（c）In the component of fiber reinforcement high-damping polymer concrete material include：Cement, water, fine coal
Ash, sand, polymeric additive, fiber and high efficiency water reducing agent, defoamer, dispersant, are wherein cement in mass ratio：Water：Fine coal
Ash：Sand=1：（0.45～0.70）：（0.50～1.20）：（1.00～2.20）Select cement, water, flyash, sand, by cement and
7～16% selection polymeric additives of flyash quality consumption, by 0.8～1.8% selection of cement and flyash quality consumption
High efficiency water reducing agent, by 0.5%～1.2% selection defoamer of cement and flyash quality consumption, is used by cement and flyash quality
Amount 0.15～0.32% selection dispersant, fiber be PVA fiber, by water, cement, flyash and sand cumulative volume 0.8%～
2.5% selection PVA fiber；Stir after above-mentioned raw materials are configured in proportion and can get fiber reinforcement high-damping polymer and mix
Solidifying soil.
Described cement adopts 42.5 grades of Portland cements of conch board P.O；Flyash adopts I level flyash；Sand is adopted
The common river sand being 1.6～2.2 with modulus of fineness；It is 1.0g/cm that water adopts density3, meet《Concrete water standard》
（JGJ63-2006）The ordinary tap water requiring；Polymeric additive adopts Carboxy emulsion or acrylate copolymer emulsion；Fine
Dimension adopts elastic modelling quantity 42Gpa, the PVA fiber of draw ratio 7%；Dispersant adopts neopelex；High efficiency water reducing agent is adopted
The polycarboxylate water-reducer being 20～35% with water-reducing rate；Defoamer adopts in tributyl phosphate, polyacrylate, silane copper polyethers
One kind.
Described step（c）In the detailed step of fiber reinforcement high-damping polymer concrete applying material be：First in chisel
Interfacial agents are smeared on the aggregate face of former beams of concrete after hair process；Then render float and set fiber reinforcement high-damping polymer is divided to mix
Solidifying soil material：Smear and during ground floor, ensure that the space between bar-mat reinforcement and aggregate face is tamped, after initial set, smear the second layer；Smear
Ensure that bar-mat reinforcement is completely covered when two layers, after initial set, smear third layer；Smear and during third layer, ensure that fiber reinforcement high-damping is gathered
The threeply degree of compound concrete reaches design thickness 25mm-50mm.
Described step（c）In interfacial agents adopt epoxy adhesive；Described step（d）In binding agent adopt the double group of A, B
Divide epoxies adhesive.
Described step（d）In the requirement of affixing carbon fabric be：To cut in advance immediately after brushing mat binder
Carbon cloth be equably laid on mat binder；With rubber cylinder along machine direction rolling or strike off with exclude bubble and
Unnecessary glue, makes binding agent fully permeate carbon cloth and firmly glue with fiber reinforcement high-damping polymer concrete material
Knot.
The present invention has the following advantages compared to existing technology：
It is excellent that the present invention takes full advantage of the lightweight highly energy-consuming of fiber reinforcement high-damping polymer concrete, high tenacity, anti-seismic performance
More, the feature of good endurance, the bridge joint effect of PVA fiber makes composite consolidation layer during bearing load destroys,
Show " multiple crack growth " and the feature of " strain hardening ", fiber reinforcement high-damping polymer concrete in back-up coat produces
Every microcrack be less than 100 microns, therefore using fiber reinforcement high-damping polymer concrete reinforce can improve coagulation
The bearing capacity of Tu Liang, the cracking mitigating beams of concrete peels off.
Conventional extending section method and Strengthened By Cfrp Sheet method are combined by the composite consolidation layer in the present invention, Gao Yan
The fiber reinforcement high-damping polymer concrete of property therefore can work in coordination with change with carbon cloth because deformation performance is close at work
Shape, alleviates the bond-slip problem between normal concrete and carbon cloth so that the high powerful feature of carbon cloth can obtain
To giving full play to.On the other hand, under big displacement and big load action, the beams of concrete after reinforcing, can produce moderate finite deformation
And keeping preferable globality, Stiffness Deterioration is also postponed, thus solves common carbon fibers cloth strengthening with external bonding method to mixed
The adverse effect of solidifying soil beam deformability, is greatly improved shock resistance；This reinforcement means is for the section of beams of concrete simultaneously
Impact less, therefore alleviates the impact to structure headroom and outward appearance for the common extending section method.
The composite reinforcing method of the present invention make use of the good deformability of fiber reinforcement high-damping polymer concrete with
Energy dissipation ability and the intensity of carbon cloth superelevation, the beams of concrete after therefore reinforcing has advantages below：（1）Section chi
Very little change is little, little to structure headroom and appearance effects；（2）Composite consolidation layer and former beams of concrete can co-ordination, overall anti-
Shock stability is good；（3）Carbon cloth performance is not fully exerted, Applied economy；（4）Simple structure, easy construction, quality is easy to be obtained
To guarantee it is easy to promote.
Specific embodiment
With reference to embodiment, the present invention is further illustrated.
A kind of fiber reinforcement high-damping polymer concrete outsourcing carbon cloth composite reinforcing method, the step of the method is such as
Under：A, former beams of concrete are processed：Remove the outer surface of former beams of concrete so that the structure sheaf of former beams of concrete exposes and reaches it
Aggregate face；B, colligation reinforcement：On the aggregate face of former beams of concrete, unwrapping wire, boring, borehole cleaning, implant shear pin with anchoring adhesive
And assembling reinforcement net is as the skeleton of composite consolidation layer；C, smear fiber reinforcement high-damping polymer concrete material：Former mixed
Smear fiber reinforcement high-damping polymer concrete material after smearing interfacial agents on the aggregate face of solidifying Tu Liang and reach design thickness；d、
Affixing carbon fabric：In the external coating binding agent of fiber reinforcement high-damping polymer concrete back-up coat and paste carbon after maintenance
Fiber cloth, that is, complete the reinforcing to former beams of concrete.The fiber reinforcement high-damping polymer concrete material adopting in said method
The component of material includes：Cement, water, flyash, sand, polymeric additive, fiber and high efficiency water reducing agent, defoamer, dispersant, its
In in mass ratio be cement：Water：Flyash：Sand=1：（0.45～0.70）：（0.50～1.20）：（1.00～2.20）Select water
Mud, water, flyash, sand, by 7～16% selection polymeric additives of cement and flyash quality consumption, by cement and flyash
0.8～1.8% selection high efficiency water reducing agent of quality consumption, by 0.5%～1.2% selection froth breaking of cement and flyash quality consumption
Agent, by 0.15～0.32% selection dispersant of cement and flyash quality consumption, fiber is PVA fiber, by water, cement, fine coal
0.8%～2.5% selection PVA fiber of the cumulative volume of ash and sand；Stir after above-mentioned raw materials are configured in proportion and can get
Fiber reinforcement high-damping polymer concrete.Wherein cement adopts 42.5 grades of Portland cements of conch board P.O；Flyash
Using I level flyash；The common river sand that sand is 1.6～2.2 using modulus of fineness；It is 1.0g/cm that water adopts density3, meet
《Concrete water standard》（JGJ63-2006）The ordinary tap water requiring；Polymeric additive adopts Carboxy emulsion or third
Olefin(e) acid copolymer emulsion；Fiber adopts elastic modelling quantity 42Gpa, the PVA fiber of draw ratio 7%；Dispersant adopts DBSA
Sodium, is also tetrapropylene benzene sodium sulfonate, is a kind of white powder powder solid, it is dissolved in water and can become translucent solution, mainly
Serve as the surfactant of anionic；The polycarboxylate water-reducer that high efficiency water reducing agent is 20～35% using water-reducing rate, its outward appearance
It is the liquid of yellow transparent oily；Defoamer adopts one of tributyl phosphate, polyacrylate, silane copper polyethers.
Go out specific requirement side by side to further illustrate present invention offer below by describing this composite reinforcing method in detail
Technical scheme：
A kind of fiber reinforcement high-damping polymer concrete outsourcing carbon cloth composite reinforcing method, detailed step and specific requirement
As follows：A, former beams of concrete are processed：Picked with the surface decoration layer that hand hammer taps the just former beams of concrete of drill rod, make former concrete
The concrete of beam exposes, and then removes the impurity of xoncrete structure layer surface, and dabbing processes and reaches concrete knot simultaneously
The aggregate face of structure layer；
B, colligation reinforcement：Unwrapping wire, boring, borehole cleaning on the aggregate face of former beams of concrete, with anchoring adhesive implantation shear pin simultaneously
At unwrapping wire, assembling reinforcement net is as the skeleton of composite consolidation layer；Wherein hole, the specific requirement of borehole cleaning is：Boring is using Germany
Import GBH5-38D type electric drill, must ensure during boring that rig, drill bit are vertical with substrate surface accurate to ensure aperture and depth size
Really, if when the unexpected stopping of rig or drill bit do not advance, illustrating that drill bit runs into reinforcing bar, can suitably misplacing to keep away in boring procedure
Open the internal reinforcing bar of beams of concrete；Borehole cleaning, first with firm brush borehole cleaning, then wipes hole wall three times with staple, finally dips in third with degreasing staple
Ketone wipes three times, until the disintegrating slag in boring and break flour are cleaned out completely, and must assure that after borehole cleaning that hole wall is dried, otherwise must
Hole wall must be dried up with blowing extension set, if as do not carried out bar planting construction in 6 hours after borehole cleaning, applying clean staple to close aperture,
To prevent dust or the grains of sand from entering；Injecting glue, the specific requirement of bar planting are：Ensure that the glue discharging the glue injection machine mouth of pipe has suitable dense
Then adhesive pouring nozzle is stretched into bottom hole by degree, and injection once retreats to discharge hole air, and it is permissible that in the hole injecting glue reaches 80%
Guarantee that glue does not outflow, injecting glue should bar planting immediately after terminating；The part that shear pin inserts in the hole will keep drying, cleaning, no
Serious corrosion, shear pin is rotating slowly and is inserted to bottom hole, in order to avoid bubble, such as has bubble to produce after shear pin insertion
Raw, illustrate that in the hole colloid is unreal, should injecting glue again；
C, smear fiber reinforcement high-damping polymer concrete material：Apply after smearing interfacial agents on the aggregate face of former beams of concrete
Smear fiber reinforcement high-damping polymer concrete material and reach design thickness, interfacial agents are made and outward appearance using by epoxy microemulsion
Epoxy adhesive for milky glue；The detailed step of fiber reinforcement high-damping polymer concrete applying material is：First exist
Interfacial agents are smeared on the aggregate face of former beams of concrete after dabbing process；Then divide render float and set fiber reinforcement high-damping polymer
Concrete material：Smear and during ground floor, ensure that the space between bar-mat reinforcement and aggregate face is tamped, after initial set, smear the second layer；Smear
Ensure during the second layer that bar-mat reinforcement is completely covered, after initial set, smear third layer；Smear guarantee fiber reinforcement high-damping during third layer
The threeply degree of polymer concrete reaches design thickness 25mm-50mm；
D, affixing carbon fabric：After maintenance 7-10 days, the external coating in fiber reinforcement high-damping polymer concrete back-up coat glues
Knot agent affixing carbon fabric, that is, complete the reinforcing to former beams of concrete, and wherein binding agent adopts A, B bi-component epoxy class gluing
Agent, the requirement of affixing carbon fabric is：Immediately the carbon cloth cutting in advance is equably laid after brushing mat binder
On mat binder；Along machine direction rolling or struck off to exclude bubble and unnecessary glue with rubber cylinder, make binding agent
Fully infiltration carbon cloth and with fiber reinforcement high-damping polymer concrete material secure bond, note during rolling damaging
Carbon cloth.
As shown in Figure 1：In above-mentioned composite reinforcing method, the beams of concrete obtaining after reinforcing is mainly by internal former concrete
Girder construction layer and inner fiber strengthen high-damping polymer concrete matrix, intermediate layer fiber reinforcement high-damping polymer concrete
Being combined that matrix, outer layer fiber enhancing high-damping polymer concrete matrix, shear pin, bar-mat reinforcement, carbon cloth are constituted adds
Gu layer forms.Former beams of concrete structure sheaf is the former beams of concrete through being surface-treated and exposing aggregate face, fiber reinforcement high resistant
Buddhist nun's polymer concrete, carbon cloth composite consolidation layer are with three layers of fiber reinforcement high-damping polymer concrete（Inner fiber
Strengthen high-damping polymer concrete matrix, intermediate layer fiber reinforcement high-damping polymer concrete matrix, outer layer fiber enhancing
High-damping polymer concrete matrix）For matrix, bar-mat reinforcement be internal reinforcement, carbon cloth be surface enhanced body；Bar-mat reinforcement
It is connected with former beams of concrete structure sheaf by shear pin；Carbon cloth utilizes binding agent and fiber reinforcement high-damping polymer
The fixing bonding of concrete.
To illustrate that the fiber reinforcement high-damping polymer concrete material that the present invention adopts possesses below by EXPERIMENTAL EXEMPLIFICATIONThe
High Crack Control ability, the multinomial performance such as energy absorption capability and high tenacity.
Cement adopts 42.5 grades of Portland cements of conch board P.O；Flyash adopts I level flyash；Sand adopts fineness
Modulus is 1.6～2.2 common river sand；It is 1.0g/cm that water adopts density3, meet《Concrete water standard》（JGJ63-
2006）The ordinary tap water requiring；Polymeric additive adopts acrylate copolymer emulsion；Fiber adopts elastic modelling quantity 42Gpa, length
The PVA fiber than 7% for the footpath（Vinal）；Dispersant adopts neopelex；High efficiency water reducing agent adopts water-reducing rate
Polycarboxylate water-reducer for 35%；Defoamer adopts silane copper polyethers.
It is cement in mass ratio：Water：Flyash：Sand 1：0.55：0.6：1.8 select cement, water, flyash, sand, by cement
With 7% selection polymeric additive of flyash quality consumption, choose efficient diminishing by the 0.8% of cement and flyash quality consumption
Agent, by 1.05% selection defoamer of cement and flyash quality consumption, by 0.30% selection of cement and flyash quality consumption
Dispersant, by 1.8% selection PVA fiber of the cumulative volume of water, cement, flyash and sand；Stir after above-mentioned raw materials are configured in proportion
Mix and uniformly can get fiber reinforcement high-damping polymer concrete.
In tension test：Ultimate tensile strength and limit stress are respectively 2.22% and 3.3Mpa, are the 20.2 of pure matrix respectively
Again with 2.84 times.Damping ratio is tested：Using the free Attenuation Method of cantilever beam, under the free end mode of cantilever beam, tap freely
End, measures logarithmic decrement and the damping ratio of complex cement base using free damping curve；Fiber reinforcement high-damping polymer
The damping ratio of the purer matrix of concrete improves 31.02%, and actual damping ratio concrete numerical value is 6.8%.Why fiber can carry
The damping capacity of high material is because：When PVA fiber disperses in the base, fiber and matrix have certain interface to tie
Close, the sliding friction at interface can be produced under forced movement, be the process that a mechanical energy is converted into frictional heat energy.
The present invention takes full advantage of the lightweight highly energy-consuming of fiber reinforcement high-damping polymer concrete, high tenacity, shock resistance
Superior, good endurance the feature of energy, the bridge joint effect of PVA fiber makes composite consolidation layer that the process destroyed occurs in bearing load
In, show " multiple crack growth " and the feature of " strain hardening ", on fiber reinforcement high-damping polymer concrete in back-up coat
The every microcrack producing is less than 100 microns, is therefore reinforced and can be improved using fiber reinforcement high-damping polymer concrete
The bearing capacity of beams of concrete, the cracking mitigating beams of concrete peels off.
Conventional extending section method and Strengthened By Cfrp Sheet method are combined by the composite consolidation layer in the present invention, Gao Yan
The fiber reinforcement high-damping polymer concrete of property therefore can work in coordination with change with carbon cloth because deformation performance is close at work
Shape, alleviates the bond-slip problem between normal concrete and carbon cloth so that the high powerful feature of carbon cloth can obtain
To giving full play to.On the other hand, under big displacement and big load action, the beams of concrete after reinforcing, can produce moderate finite deformation
And keeping preferable globality, Stiffness Deterioration is also postponed, thus solves common carbon fibers cloth strengthening with external bonding method to mixed
The adverse effect of solidifying soil beam deformability, is greatly improved shock resistance；This reinforcement means is for the section of beams of concrete simultaneously
Impact less, therefore alleviates the impact to structure headroom and outward appearance for the common extending section method.
The composite reinforcing method of the present invention make use of the good deformability of fiber reinforcement high-damping polymer concrete with
Energy dissipation ability and the intensity of carbon cloth superelevation, the beams of concrete after therefore reinforcing has advantages below：（1）Section chi
Very little change is little, little to structure headroom and appearance effects；（2）Composite consolidation layer and former beams of concrete can co-ordination, overall anti-
Shock stability is good；（3）Carbon cloth performance is not fully exerted, Applied economy；（4）Simple structure, easy construction, quality is easy to be obtained
To guarantee it is easy to promote.
Above example technological thought only to illustrate the invention is it is impossible to limit protection scope of the present invention with this, every
According to technological thought proposed by the present invention, any change done on the basis of technical scheme, each fall within the scope of the present invention
Within；The technology that the present invention is not directed to all can be realized by prior art.
Claims (10)
1. a kind of fiber reinforcement high-damping polymer concrete outsourcing carbon cloth composite reinforcing method it is characterised in that：The party
The step of method is as follows：
A, former beams of concrete are processed：Remove the outer surface of former beams of concrete so that the structure sheaf of former beams of concrete exposes and reaches
Its aggregate face；
B, colligation reinforcement：Unwrapping wire, boring, borehole cleaning on the aggregate face of former beams of concrete, with anchoring adhesive implantation shear pin simultaneously
Assembling reinforcement net is as the skeleton of composite consolidation layer；
C, smear fiber reinforcement high-damping polymer concrete material：Apply after smearing interfacial agents on the aggregate face of former beams of concrete
Smear fiber reinforcement high-damping polymer concrete material and reach design thickness；
D, affixing carbon fabric：After maintenance fiber reinforcement high-damping polymer concrete back-up coat external coating binding agent simultaneously
Affixing carbon fabric, that is, complete the reinforcing to former beams of concrete.
2. fiber reinforcement high-damping polymer concrete outsourcing carbon cloth composite reinforcing method according to claim 1,
It is characterized in that：Described step（a）In former beams of concrete process and need to pick the surface decoration layer of former beams of concrete, make former
The concrete of beams of concrete exposes, and then removes the impurity of xoncrete structure layer surface, and dabbing processes to reach and mixes simultaneously
The aggregate face of Xtah Crude Clay structure layer.
3. fiber reinforcement high-damping polymer concrete outsourcing carbon cloth composite reinforcing method according to claim 1,
It is characterized in that：Described step（b）In boring, the specific requirement of borehole cleaning be：Rig, drill bit and base material table must be ensured during boring
Face is vertically accurate with depth size to ensure aperture；First with firm brush borehole cleaning during borehole cleaning, then wipe hole wall three times with staple, finally
Dip in acetone with degreasing staple to wipe three times, until the disintegrating slag in boring and break flour are cleaned out completely.
4. fiber reinforcement high-damping polymer concrete outsourcing carbon cloth composite reinforcing method according to claim 3,
It is characterized in that：If not carrying out bar planting construction at most 6 hours after borehole cleaning, aperture should be closed.
5. fiber reinforcement high-damping polymer concrete outsourcing carbon cloth composite reinforcing method according to claim 1,
It is characterized in that：Described step（b）In injecting glue, the specific requirement of bar planting be：Adhesive pouring nozzle is stretched into bottom hole, injection once retreats
Once to discharge hole air, in the hole injecting glue reach 80%, with guarantee glue do not outflow and injecting glue terminate after should plant immediately
Muscle；Shear pin is rotating slowly and is inserted to bottom hole in order to avoid bubble occurs.
6. fiber reinforcement high-damping polymer concrete outsourcing carbon cloth composite reinforcing method according to claim 1,
It is characterized in that：Described step（c）In the component of fiber reinforcement high-damping polymer concrete material include：Cement, water, powder
Coal ash, sand, polymeric additive, fiber and high efficiency water reducing agent, defoamer, dispersant, are wherein cement in mass ratio：Water：Powder
Coal ash：Sand=1：（0.45～0.70）：（0.50～1.20）：（1.00～2.20）Select cement, water, flyash, sand, by cement
With 7～16% selection polymeric additives of flyash quality consumption, select by the 0.8～1.8% of cement and flyash quality consumption
Take high efficiency water reducing agent, by 0.5%～1.2% selection defoamer of cement and flyash quality consumption, by cement and flyash quality
0.15～0.32% selection dispersant of consumption, fiber is PVA fiber, by the 0.8% of the cumulative volume of water, cement, flyash and sand
～2.5% selection PVA fiber；Stir after above-mentioned raw materials are configured in proportion and can get fiber reinforcement high-damping polymer
Concrete.
7. fiber reinforcement high-damping polymer concrete outsourcing carbon cloth composite reinforcing method according to claim 6,
It is characterized in that：Described cement adopts 42.5 grades of Portland cements of conch board P.O；Flyash adopts I level flyash；
The common river sand that sand is 1.6～2.2 using modulus of fineness；It is 1.0g/cm that water adopts density3Ordinary tap water；Polymer adds
Plus agent adopts Carboxy emulsion or acrylate copolymer emulsion；Fiber adopts elastic modelling quantity 42Gpa, the PVA fiber of draw ratio 7%；
Dispersant adopts neopelex；The polycarboxylate water-reducer that high efficiency water reducing agent is 20～35% using water-reducing rate；Defoamer
Using one of tributyl phosphate, polyacrylate, silane copper polyethers.
8. the fiber reinforcement high-damping polymer concrete outsourcing carbon cloth composite consolidation side according to claim 1 or 6
Method it is characterised in that：Described step（c）In the detailed step of fiber reinforcement high-damping polymer concrete applying material be：
First smear interfacial agents on the aggregate face of the former beams of concrete after dabbing is processed；Then render float and set fiber reinforcement high-damping is divided to gather
Compound concrete material：Smear and during ground floor, ensure that the space between bar-mat reinforcement and aggregate face is tamped, after initial set, smear the second layer；
Smear and during the second layer, ensure that bar-mat reinforcement is completely covered, after initial set, smear third layer；Smear and during third layer, ensure that fiber reinforcement is high
The threeply degree of damping materials concrete reaches design thickness 25mm-50mm.
9. fiber reinforcement high-damping polymer concrete outsourcing carbon cloth composite reinforcing method according to claim 1,
It is characterized in that：Described step（c）In interfacial agents adopt epoxy adhesive；Described step（d）In binding agent adopt A, B double
Component epoxy class adhesive.
10. the fiber reinforcement high-damping polymer concrete outsourcing carbon cloth composite consolidation side according to claim 1 or 9
Method it is characterised in that：Described step（d）In the requirement of affixing carbon fabric be：Immediately will in advance after brushing mat binder
The carbon cloth cutting equably is laid on mat binder；Or struck off along machine direction rolling to exclude with rubber cylinder
Bubble and unnecessary glue, make binding agent fully permeate carbon cloth and with fiber reinforcement high-damping polymer concrete material jail
Adhere knot.
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