CN106760207B - A kind of preparation method of TRC template reinforced column - Google Patents
A kind of preparation method of TRC template reinforced column Download PDFInfo
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- CN106760207B CN106760207B CN201611168278.5A CN201611168278A CN106760207B CN 106760207 B CN106760207 B CN 106760207B CN 201611168278 A CN201611168278 A CN 201611168278A CN 106760207 B CN106760207 B CN 106760207B
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- 239000004567 concrete Substances 0.000 claims abstract description 45
- 239000004574 high-performance concrete Substances 0.000 claims abstract description 38
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 29
- 239000010959 steel Substances 0.000 claims abstract description 29
- 238000010008 shearing Methods 0.000 claims abstract description 20
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 13
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- 238000005266 casting Methods 0.000 claims abstract description 5
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 69
- 239000004568 cement Substances 0.000 claims description 31
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 30
- 239000010703 silicon Substances 0.000 claims description 30
- 229910052710 silicon Inorganic materials 0.000 claims description 30
- 239000004576 sand Substances 0.000 claims description 29
- 239000002956 ash Substances 0.000 claims description 28
- 239000010881 fly ash Substances 0.000 claims description 24
- 239000003795 chemical substances by application Substances 0.000 claims description 23
- 230000002787 reinforcement Effects 0.000 claims description 22
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 16
- 238000003756 stirring Methods 0.000 claims description 14
- 239000003822 epoxy resin Substances 0.000 claims description 12
- 229920000647 polyepoxide Polymers 0.000 claims description 12
- 238000009954 braiding Methods 0.000 claims description 11
- 238000013461 design Methods 0.000 claims description 10
- 238000007598 dipping method Methods 0.000 claims description 10
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- 229920003023 plastic Polymers 0.000 claims description 10
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- 239000006071 cream Substances 0.000 claims description 8
- 239000011150 reinforced concrete Substances 0.000 claims description 8
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- 238000006073 displacement reaction Methods 0.000 claims description 5
- 239000003365 glass fiber Substances 0.000 claims description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 5
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- 238000005336 cracking Methods 0.000 claims description 4
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- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 4
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- 229920000573 polyethylene Polymers 0.000 claims description 4
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- 239000004760 aramid Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
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- 150000002085 enols Chemical class 0.000 description 1
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- 230000035939 shock Effects 0.000 description 1
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- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical class O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000011209 textile-reinforced concrete Substances 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
- E04C3/34—Columns; Pillars; Struts of concrete other stone-like material, with or without permanent form elements, with or without internal or external reinforcement, e.g. metal coverings
-
- 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
- E04G13/00—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills
- E04G13/02—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills for columns or like pillars; Special tying or clamping means therefor
-
- 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
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Rod-Shaped Construction Members (AREA)
Abstract
A kind of preparation method of TRC template reinforced column, comprising: using high-tensile and the good fiber knitted net of rotproofness, reinforce fiber knitted net by fiber knitted net impregnation or with steel wire mesh liner；Internal model installation is carried out, shearing resistance hook is inserted in the drilling of internal model, fiber knitted net is fixed to the outside of internal model；External mold is constructed in the outside of fiber knitted net again, the high performance concrete prepared is slowly injected into the space of internal model, fiber knitted net and external mold composition, completes the production of TRC template；Demoulding is carried out after TRC template layer reaches setting intensity, the casting concrete in TRC template completes the preparation of TRC template reinforced column.Compared with prior art, not only time saving and energy saving, it reduces costs, improves construction efficiency, and improve the bearing capacity and ductility of reinforced column, also improve durability of the component in the adverse circumstances such as cold and alkalinity；Keep the reinforcing of building more efficient, simple, cheap and environmentally friendly.
Description
Technical field
The present invention relates to a kind of preparation methods of reinforced column, especially a kind of to apply suitable for reinforced concrete structure
The preparation method of novel TRC template reinforced column, belongs to the enhancing technical field of concrete in work.
Technical background
Cast in place concrete form is the indispensable construction tool that usage amount is big, wide in structure of reinforced concrete.According to phase
Statistics is closed, template consumption is up to 4~5 square metres in every square metre of cast-in-place concrete, and form work engineering expense accounts for entire project
The 30%~35% of engineering cost, labour cost account for the 40%~50% of the total labour cost of entire project, and the duration accounts for entire project work
The 50% of phase.It can be seen that form work engineering occupies extremely important component and status in entire cast-in-place concrete, it is shadow
An important factor for ringing engineering construction progress, cost and engineering construction quality.It constructs in different Cast-in-situ Concrete Structural Engineerings
In, corresponding template type, material and arrangement and method for construction are selected according to building structure, progress, the quality of engineering will be directly affected
And cost.
Development in 60 years is passed through in the cast in place concrete form industry in China, especially a large amount of in the late three decades to introduce, inhale
It receives and using external advanced mould plate technique and technique, template industry has obtained great development and application, occur a variety of cast-in-place
The situation that concrete blinding largely uses at home simultaneously.Cast-in-place concrete template can be divided by structure type at present: group
Combined type mold, tool-type typified form and tool-type large form etc.；It is divided by formwork assembling and disassembling technique difference: tears shifting formula template, whole open
Body traveling shuttering, fixed tire end template and non-dismounting type template (permanent formwork) etc.；It is divided by the material difference of template:
Wooden model, punching block, glued template die, the modern designs of plastics, glass punching block and reinforced concrete clay model etc.
Traditional engineering template overwhelming majority belongs to pour support construction, tears open again after concreting hardened forming
Mould.Building is all carried on a shoulder pole using stress function by the concrete walls, column and joist support conserved after pouring, and template is only in concrete
Play the role of supporting cover half before unformed hardening.Concrete structure after molding is conserved, according to structure and requirement, is still needed to
Concrete surface after shaping carries out the processing of the processes such as sand finish, the coarse-fine decorations in surface.On the cold ground of northern China
Area, due to warm keeping requirement, building also needs to carry out wall thermal insulating secondary treatment.Due to waterproof requirement, roof, ground etc.
Waterproof, damp-proof treatment are carried out according to building standard and requirement, kept the temperature within doors according to environmental condition, is heat-insulated,
The decorations such as sound insulation construction.These work will greatly increase cost and the time of entire engineering construction.It is insufficient for these,
Using the new type of permanent property specific template for needing Prefabrication according to different function, can make template not only has traditional structure
Support molding function, but also assign various decorations that conventional template do not have, fit up and exempt from demoulding function.Permanent formwork
Reservation part as building element can also improve structural behaviour, improve the physical and mechanical property of concrete structure.From test
As a result from the point of view of, since permanent formwork is not necessarily to demoulding, permanent formwork and cast-in-place concrete structure form one it is firm whole
Body, permanent formwork form theoretically so-called " hoop effect ", to make from peripheral securely constraint cast-in-place concrete structure
Concrete column, the resistance to compression of beam, tensile strength can be improved in permanent formwork, thus can reduce the section ruler of concrete component
It is very little.Test proves that various fibre-reinforced permanent formworks can significantly improve beams of concrete, the bending resistance of column, anti-folding by force
Degree.
Fiber knitted net enhancing concrete (Textile Reinforced Concrete, TRC) is a kind of fiber composite increasing
Strong material is made of multiaxis fabric and high-performance fine aggregate concrete.Wherein high-performance fine aggregate concrete not only intensity
Height, and there is high fluidity, self compacting ability, the excellent working characteristics such as education resistance and impervious, anti-carbonation and freeze thawing resistance etc.
Preferable durability；Fibrous material (such as alkali-resistant glass fibre, carbon fiber, aramid fibre, basalt fibre) has
The excellent characteristics such as lightweight, high-strength, corrosion-resistant, endurance, and braiding network fiber is thinner, and the protective layer thickness of fiber only needs to meet
It coheres anchoring and requires.So TRC structure has, high-strength, crack resistance, high ductility, anticorrosive, durability is good, fire prevention, can design
The strong advantage of property, the reinforcement and strengthening of structure suitable for thin-wall construction or cladding material, corrosion resistant member and adverse circumstances,
Has application in the important engineering project such as bridge, building, structures.TRC thin plate overlaps concrete structure as permanent template
Not only play the role of template, but also a part as structure participates in co-operation, is conducive to protect reinforcing bar, improves structural elements
Durability and effective bearing capacity, ductility, save a large amount of construction formwork.
Summary of the invention
Technical problem: the purpose of the present invention is overcoming shortcoming in the prior art, a kind of novel TRC template is provided
The preparation method of reinforced column uses TRC thin plate to make TRC template reinforced column as permanent template, can not only
Realize it is construction integrated do not demould, improve structure integration degree, and give reinforced column provide hoop constraint power, thus
Increase shaft bearing capacity and ductility in service phase.
Technical solution: the preparation method of TRC template reinforced column of the invention includes the following steps:
A. using high-tensile and the good fiber knitted net of rotproofness, add by fiber knitted net impregnation or with steel wire mesh liner
Gu fiber knitted net；
B. internal model installation is carried out, square column uses veneer for mould, and cylinder uses common PVC plastic socket for mould；By side
Shape or the design size of round reinforced column construct internal model, carry out necessary support to internal model, form the column table after reinforcing
The hole of several inserting shearing resistance hooks is uniformly bored in face in internal model, and pitch of holes is equal to the integral multiple of fiber knitted net side length of element, hole
Diameter is slightly larger than the shearing resistance hook outer diameter being inserted into, to guarantee that shearing resistance hook does not slide；
C. shearing resistance hook is inserted in the drilling of internal model, and requirement is split according to the sectional dimension of design structure and carrying limit, is determined
The number of plies of the size of mesh opening of fiber knitted net and required laying is consolidated by fiber knitted net that dipping process is crossed or with steel wire mesh liner
Fixed fiber knitted net is fixed on the outside of internal model；
D. external mold size is determined according to the TRC template size of setting, in the outside veneer or PVC plastic of fiber knitted net
Expects pipe cylinder constructs external mold, carries out necessary support to external mold, is equal to the distance between external mold inner surface and fiber knitted net interior
The distance between mould outer surface and fiber knitted net；
E. the high performance concrete prepared is slowly injected into the space of internal model, fiber knitted net and external mold composition, side
Beat inner and outer template in injection side, it is ensured that smoothly flowing into and pour for high performance concrete is closely knit, and later, wet water curing high-performance is mixed
Solidifying soil completed the production of TRC template to 28 days standard curing ages；
F. demoulding is carried out after TRC template layer reaches setting intensity, demoulding sequence is successively are as follows: removes internal model support → piecemeal
External mold is removed in disassembly internal model → dismounting external mold supports →；
G. it is put into steel reinforcement cage in TRC template, the cushion block of required thickness is placed between steel reinforcement cage and TRC template to protect
Demonstrate,prove the distance between steel reinforcement cage and TRC reinforcing layer in reinforced column, the TRC mould prepared after steel reinforcement cage is fixed
Template of the plate as pouring reinforcement concrete column, due to sufficiently having developed by the TRC template strength of 28 days standard curing ages,
Can sufficiently vibrate during casting concrete, after the completion of pouring, temperature be 20 DEG C ± 2 DEG C, humidity be greater than 95% condition
Lower maintenance 28 days, completes the preparation of TRC template reinforced column.
The fiber knitted net uses carbon fiber, aramid fiber, alkali-resistant glass fibre, basalt fibre, polyvinyl alcohol
The braiding of one of fiber or polyethylene fibre braiding, or two different fibers are used respectively by the radial direction and broadwise of braiding
Braiding.
The aggregate size of the high performance concrete is 0.5~4mm, and its strength grade is greater than or mixed equal to being reinforced
The strength grade for coagulating soil, can preferably play the consolidation effect of TRC.
The immersing glue process: being impregnated with epoxy resin first, before fiber knitted net is uncured with epoxy resin dipping
Make blasting treatment, wherein the epoxy resin of impregnated fiber woven net, curing agent, diluent mass ratio be 65~70:60~80:
30~35, sand generally uses silica sand.
For the ease of demoulding, the PVC plastic socket of cylinder is cut into three pieces in 120 °, is then cohered again with adhesive tape solid
It is fixed.
The size of mesh opening of the fiber knitted net and the number of plies of required laying are 1-3 layers.
The ingredient of the high performance concrete is cement, I grades of flyash, silicon ash, silica sand and water, wherein I grades of flyash
Volume be cement, flyash, silicon ash quality sum 20%-40%, the volume of silicon ash is cement, flyash, silicon ash quality
The sum of 5-10%；First cement, I grades of flyash, silicon ash and silica sand are stirred evenly in mass ratio, water stirring is added later, adds
Enter water-reducing agent to stir evenly.
The manufacturing process of the high performance concrete: 52.5 portland cements are selected, in mass ratio first by 52.5 silicic acid
Salt cement, I grade flyash, silicon ash and silica sand are stirred 2-3 minutes with blender, are stirring evenly and then adding into water stirring, are then added
Sika three generations's water-reducing agent is stirred for 2-3 minutes；The proportion of each component: 52.5 portland cement 500kg/m3, I grades of flyash
180kg/m3, silicon ash 40kg/m3, the silica sand 800kg/m of 0~0.6mm of partial size3, the silica sand 400kg/m of 0.6~1.2mm of partial size3,
Water 252kg/m3, Sika three generations's water-reducing agent 4.0kg/m3；For the anti-cracking ability and toughness for improving high performance concrete, limitation is split
Slit width degree simultaneously makes basis material have the ability for generating a plurality of fine and closely woven crack under stress condition, and addition volume ratio is 0.5-2%'s
Chopped strand is stirred for 3-5 minutes.
Before pouring reinforcement concrete column, in TRC template inner surface brushing interfacial agents, to guarantee TRC template and reinforcing bar
Interfacial adhesion between concrete column, the interfacial agents are water-base epoxy, the third cream 1#, the third cream 2# and epoxy mortar bios
Face agent or cement paste or mortar, the cement slurry for mixing mineral admixture or cement mortar, cement slurry or water mixed with swelling agent
The inorganic interfacial agents of cement mortar, the environmental requirement according to locating for reinforced column are selected.
Horizontally-supported the internal model displacement when pouring TRC template is prevented every 50cm setting in the internal model.
The utility model has the advantages that by adopting the above-described technical solution, the present invention is by that can make ectonexine to fiber knitted net impregnation
Fiber uniform force, and the organic line and rove of loop bonding fiber knitted net capable of being connected plays increase and coheres and mechanical
The effect of occlusion, and protective layer is formed in fiber woven net surface, it can effectively avoid the lye in concrete to fiber knitted net
Erosion, enhance the durability of permanent template.Compared with existing reinforcement means, tearing open after the completion of component pours not only is eliminated
Die process improves construction efficiency, and due to having used fiber knitted net and high property so that producing in enormous quantities becomes possibility
Energy concrete, improves the bearing capacity and ductility of reinforced column, also improves component in adverse circumstances such as cold and alkalinity
In durability；Due to being implanted into shearing resistance hook in component surface, the shear resistance between TRC template layer and reinforced column is enhanced
Can, so that reinforcing layer is worked together well with former component, is not easy shearing stripping damage occur on interface, makes building
Reinforcing is more efficient, simple, cheap and environmentally friendly, has wide applicability.
Detailed description of the invention
Fig. 1 is that TRC template reinforced concrete square columns of the invention reinforce a schematic diagram of a layer structure.
Fig. 2 is that TRC template reinforced concrete square columns of the invention reinforce double-layer structure schematic diagram.
In figure: 1- shearing resistance hook, 2- cast-in-situ reinforced concrete column, the prefabricated permanent template of 3-, 4- fiber knitted net.
Specific embodiment
The invention will be further described for embodiment in reference to the accompanying drawing:
The preparation method of TRC template reinforced column of the invention, the specific steps are as follows:
A. using high-tensile and the good fiber knitted net of rotproofness, add by fiber knitted net impregnation or with steel wire mesh liner
Gu fiber knitted net；The fiber knitted net uses carbon fiber, aramid fiber, alkali-resistant glass fibre, basalt fibre, poly- second
The braiding of one of enol fiber or polyethylene fibre braiding, or use respectively by the radial direction and broadwise of braiding two different
Fibrage.The immersing glue process: being impregnated with epoxy resin first, before fiber knitted net is uncured with epoxy resin dipping
Make blasting treatment, wherein the epoxy resin of impregnated fiber woven net, curing agent, diluent mass ratio be 65~70:60~80:
30~35, sand generally uses silica sand；
B. internal model installation is carried out, square column uses veneer for mould, and cylinder uses common PVC plastic socket for mould；By side
Shape or the design size of round reinforced column construct internal model, carry out necessary support to internal model, form the column table after reinforcing
The hole of several inserting shearing resistance hooks is uniformly bored in face in internal model, and pitch of holes is equal to the integral multiple of fiber knitted net side length of element, hole
Diameter is slightly larger than the shearing resistance hook outer diameter being inserted into, to guarantee that shearing resistance hook does not slide；For the ease of demoulding, by the PVC plastic of cylinder
Expects pipe cylinder is cut into three pieces in 120 °, then coheres fixation with adhesive tape again；It is horizontally-supported every 50cm setting in the internal model
Prevent the internal model displacement when pouring TRC template；
C. shearing resistance hook is inserted in the drilling of internal model, and requirement is split according to the sectional dimension of design structure and carrying limit, is determined
The number of plies of the size of mesh opening of fiber knitted net and required laying is consolidated by fiber knitted net that dipping process is crossed or with steel wire mesh liner
Fixed fiber knitted net is fixed on the outside of internal model；The size of mesh opening of the fiber knitted net and the number of plies of required laying are 1-3
Layer；
D. external mold size is determined according to the TRC template size of setting, in the outside veneer or PVC plastic of fiber knitted net
Expects pipe cylinder constructs external mold, carries out necessary support to external mold, is equal to the distance between external mold inner surface and fiber knitted net interior
The distance between mould outer surface and fiber knitted net；
E. the high performance concrete prepared is slowly injected into the space of internal model, fiber knitted net and external mold composition, side
Beat inner and outer template in injection side, it is ensured that smoothly flowing into and pour for high performance concrete is closely knit, and later, wet water curing high-performance is mixed
Solidifying soil completed the production of TRC template to 28 days standard curing ages；
Before pouring reinforcement concrete column, in TRC template inner surface brushing interfacial agents, to guarantee TRC template and reinforcing bar
Interfacial adhesion between concrete column, the interfacial agents are water-base epoxy, the third cream 1#, the third cream 2# and epoxy mortar bios
Face agent or cement paste or mortar, the cement slurry for mixing mineral admixture or cement mortar, cement slurry or water mixed with swelling agent
The inorganic interfacial agents of cement mortar can be selected according to the environmental requirement locating for reinforced column；
In order to guarantee that high performance concrete can pass through grid, the partial size of high performance concrete aggregate is 0.5~4mm,
And its strength grade is greater than or equal to the strength grade for being reinforced concrete, can preferably play the consolidation effect of TRC.
The ingredient of the high performance concrete is cement, I grades of flyash, silicon ash, silica sand and water, wherein I grades of flyash
Volume be cement, flyash, silicon ash quality sum 20%-40%, the volume of silicon ash is cement, flyash, silicon ash quality
The sum of 5-10%；
The manufacturing process of high performance concrete: select 52.5 portland cements, in mass ratio first by 52.5 portland cements,
I grades of flyash, silicon ash and silica sand are stirred 2-3 minutes with blender, are stirring evenly and then adding into water stirring, Sika three generations is then added
Water-reducing agent stirs 2-3 minutes.The proportion of each component: 52.5 portland cement 500kg/m3, I grades of flyash 180kg/m3, silicon ash
40kg/m3, the silica sand 800kg/m of 0~0.6mm of partial size3, the silica sand 400kg/m of 0.6~1.2mm of partial size3, water 252kg/m3,
Sika three generations's water-reducing agent 4.0kg/m3；
For the anti-cracking ability and toughness for improving high performance concrete, Restricted Crack Width simultaneously makes basis material have stress
Under the conditions of generate the ability in a plurality of fine and closely woven crack, the chopped strand that addition volume ratio is 0.5-2% is stirred for 3-5 minutes；
F. demoulding is carried out after TRC template layer reaches setting intensity, demoulding sequence is successively are as follows: removes internal model support → piecemeal
External mold is removed in disassembly internal model → dismounting external mold supports →；
G. it is put into steel reinforcement cage in TRC template, the cushion block of required thickness is placed between steel reinforcement cage and TRC template to protect
Demonstrate,prove the distance between steel reinforcement cage and TRC reinforcing layer in reinforced column, the TRC mould prepared after steel reinforcement cage is fixed
Template of the plate as pouring reinforcement concrete column, due to sufficiently having developed by the TRC template strength of 28 days standard curing ages,
Can sufficiently vibrate during casting concrete, after the completion of pouring, temperature be 20 DEG C ± 2 DEG C, humidity be greater than 95% condition
Lower maintenance 28 days, completes the preparation of TRC template reinforced column.
Embodiment 1, as shown in Figure 1,
1, fiber knitted net impregnation or steel wire mesh liner anchoring fiber mesh grid
Fiber knitted net is knitted by fiber coarse sand loop bonding, and the soft fabric of high-performance is belonged to, not plus processing fibrage
Net is not easy independent vertical and is laid in concrete component, crosses dipping process and carrys out sclerotic fiber mesh grid, or is consolidated using steel wire
The fixed fiber knitted net for not adding processing.Impregnation can make ectonexine fiber uniform force, can having loop bonding fiber knitted net
Machine line and rove are connected, and play the role of increasing and cohere and mechanical snap, and form protective layer in fiber woven net surface,
It can effectively avoid the lye in concrete to the erosion of fiber knitted net, enhance the durability of permanent template.Specific production method
Are as follows: it is impregnated first with epoxy resin, makees blasting treatment before fiber knitted net epoxy resin dipping is uncured, wherein dipping is fine
Tie up the epoxy resin of mesh grid, curing agent, diluent mass ratio be 65~70:60~80:30~35, sand generally uses silicon
Sand.Fiber knitted net can carry out impregnation pretreatment in factory before use, to greatly shorten Production Time, improve construction effect
Rate.And steel wire mesh liner anchoring fiber mesh grid is not only simple and easy, is convenient for construction, moreover it is possible to improve formwork rigidity.First cutting needs
Then the steel wire cut is rolled into required size and shape by the fiber knitted net and steel wire for wanting size, then will be fine
It ties up mesh grid to be bound with thin wire in steel wire net surface, it is made to be tightly fixed together；
2, internal model is installed
It uses common veneer for mould, determines internal model size by the design size of reinforced column, and guarantee that thin plate connects
Meeting place, securely spillage is not easy on interface to guarantee that TRC template can reach the reliable bond between concrete structure
Stripping damage is now sheared, is uniformly drilled in internal model, for being inserted into shearing resistance hook.Pitch of holes is equal to fiber knitted net side length of element
Integral multiple, and the diameter in hole is slightly larger than the shearing resistance hook outer diameter that is inserted into guarantees that shearing resistance hook does not slide, to pour TRC template mixed
Not spillage when solidifying soil, removes the dust in hole.Then it is cohered again with adhesive tape, setting support prevents from pouring in internal model
Internal model displacement when TRC template.
3, fiber knitted net is installed
Requirement is split according to the sectional dimension of original structure and carrying limit, determines size of mesh opening and the institute of reasonable fiber knitted net
The number of plies for needing to lay, Fig. 1 show 1 layer, and Fig. 2 show 2 layers.Fiber knitted net or steel wire mesh liner that dipping process is crossed are consolidated
Fixed fiber knitted net is fixed to inner mould surface.Detailed process are as follows: tensioning anchoring fiber mesh grid makes fiber knitted net and internal model
Between distance be equal to fiber knitted net and the thickness to high performance concrete between reinforced column surface.It is laid with the second layer and the second layer
When the above fiber knitted net, the process of above-mentioned anchoring fiber mesh grid is repeated, and distance between fiber knitted net is made to be equal to fiber
The thickness of high performance concrete between mesh grid.
4, external mold is installed
External mold size is determined according to TRC template size, external mold is mounted on the outside of fiber knitted net, compiles external mold and fiber
Distance is equal to the thickness for reinforcing high performance concrete between rear pillar surface and fiber knitted net between knitmesh.And it is set on the outside of external mold
Setting appropriate support prevents the internal model displacement when pouring TRC template.
5, TRC template and maintenance are poured
High performance concrete is poured in the space that internal model and external mold form, the ingredient of high performance concrete is cement, I grades
Flyash, silicon ash, silica sand and water, wherein the volume of I grades of flyash be cement, flyash, silicon ash quality sum 20%-
40%, the volume of silicon ash be cement, flyash, silicon ash quality sum 5-10%.The strength grade of high performance concrete is big
In or equal to be reinforced the strength grade of concrete, the consolidation effect of TRC can be preferably played.To improve high performance concrete
Brittleness, and according to many-sided needs of Practical Project, suitable chopped strand can be added in high performance concrete, it is adoptable
Chopped strand includes the vinal with flexibility and high-hydroscopicity, the polyethylene fiber with high-intensitive and corrosion resistance
Dimension, have the characteristics that high tensile can carbon fiber, with high temperature resistant, alkaline-resisting acid corrosion alkali-resistant glass fibre, have high intensity
Basalt fibre with heat-resisting quantity, high, one of good polypropylene fibre of electrical insulating property etc. or a variety of with intensity.
When preparing high performance concrete, label, the Jia Shui of cement should be determined according to strength grade and working performance requirement
Mass ratio and silica sand specification and addition content.In order to meet high fluidity, stick the working performances such as poly- property and water-retaining property with
And the durability of component, I grades of flyash and silicon ash are added in right amount.To reduce high performance concrete early-age shrinkage and drying shrinkage, generally
The volume of silicon ash is controlled within 10%.It is developed slowly to reduce early strength caused by adding coal ash, the volume of silicon ash
It is greater than or is equal to 5%, volume is preferable in 6%-8% effect.It should be required according to strength grade, select high performance concrete
Cement grade, silica sand specification adjust the mass ratio of cementitious material and water.
The production method of high performance concrete are as follows: cement, I grades of flyash, silicon ash and silica sand blender are first stirred into 2-3
Minute, it is stirring evenly and then adding into water stirring, water-reducing agent is then added, is stirred 2-3 minutes.Sometimes for raising high performance concrete
Anti-cracking ability and toughness, Restricted Crack Width simultaneously makes basis material have the energy for generating a plurality of fine and closely woven crack under stress condition
Power finally also needs that the chopped strand that volume ratio is 0.5-2% is added, is stirred for 3-5 minutes.
The high performance concrete prepared is slowly injected into the space of internal model and external mold composition, marginal not enter side beat it is inside and outside
Template, it is ensured that smoothly flowing into and pour for high performance concrete is closely knit.Due to high performance concrete have good mobility and
From close property, shock club can not be used during pouring TRC template.
After pouring high performance concrete in the space that internal model and external mold form, wet water curing high performance concrete to age
Phase completes the production of TRC template.
6, it demoulds
Destruction during demoulding to test specimen in order to prevent, carries out demoulding after the intensity that it reaches certain again.Demoulding is suitable
Sequence is successively are as follows: internal model supporting removal → piecemeal disassembly internal model → external mold supporting removal → external mold is removed
7, pouring reinforcement concrete column and maintenance
In order to preferably guarantee the interfacial adhesion between TRC template and reinforced column, in pouring reinforcement concrete column
Before, can be first in TRC template inner surface brushing interfacial agents, interfacial agents can be water-base epoxy, the third cream 1#, the third cream 2#, epoxy glue
The organic interfacial agents such as mud, be also possible to cement paste or mortar, the cement slurry of mixing mineral admixture or cement mortar, mixed with swollen
The inorganic interfacial agents such as swollen dose of cement slurry or cement mortar, the environmental requirement according to locating for reinforced column carry out reasonable
Selection.In addition to this, the shearing resistance hook being embedded in TRC template also ensures sufficiently being engaged for TRC template and reinforced column,
It avoids and relatively moves therebetween, improve the overall performance of TRC template reinforced column.
By the design of component, steel reinforcement cage is put into TRC template, and guarantees required thickness of concrete cover, by steel
Muscle cage is fixed.Required model concrete is poured, it, can be during casting concrete since TRC template strength largely develops
It sufficiently vibrates, is conserved under the conditions of standard curing after the completion of pouring, that is, complete the preparation of TRC template reinforced column.
Claims (10)
1. a kind of preparation method of TRC template reinforced column, which comprises the steps of:
A. using high-tensile and the good fiber knitted net of rotproofness, fibre is reinforced by fiber knitted net impregnation or with steel wire mesh liner
Tie up mesh grid；
B. internal model installation is carried out, square column uses veneer for mould, and cylinder uses common PVC plastic tube tube for mould；By rectangular
Or the design size of round reinforced column constructs internal model, carries out necessary support to internal model, forms the column surface after reinforcing,
Uniformly bored in internal model it is several inserting shearing resistance hooks holes, pitch of holes be equal to fiber knitted net side length of element integral multiple, hole it is straight
Diameter is slightly larger than the shearing resistance hook outer diameter being inserted into, to guarantee that shearing resistance hook does not slide；
C. shearing resistance hook is inserted in the drilling of internal model, and requirement is split according to the sectional dimension of design structure and carrying limit, determines fiber
The number of plies of the size of mesh opening of mesh grid and required laying is fixed by fiber knitted net that dipping process is crossed or with steel wire mesh liner
Fiber knitted net is fixed on the outside of internal model；
D. external mold size is determined according to the TRC template size of setting, in the outside veneer or PVC plastics of fiber knitted net
Socket constructs external mold, carries out necessary support to external mold, the distance between external mold inner surface and fiber knitted net is made to be equal to internal model
The distance between outer surface and fiber knitted net；
E. the high performance concrete prepared is slowly injected into the space of internal model, fiber knitted net and external mold composition, marginal not enters
While beaing inner and outer template, it is ensured that smoothly flowing into and pour for high performance concrete is closely knit, later, wet water curing high performance concrete
To 28 days standard curing ages, the production of TRC template is completed；
F. demoulding is carried out after TRC template layer reaches setting intensity, demoulding sequence is successively are as follows: removes internal model support → blocked breaking
It unloads internal model → dismounting external mold supports → and removes external mold；
G. it is put into steel reinforcement cage in TRC template, the cushion block of required thickness is placed between steel reinforcement cage and TRC template to guarantee steel
The distance between steel reinforcement cage and TRC reinforcing layer in reinforced concrete column, the TRC template prepared after steel reinforcement cage is fixed are made
It, can be due to sufficiently having developed by the TRC template strength of 28 days standard curing ages for the template of pouring reinforcement concrete column
It sufficiently vibrates during casting concrete, after the completion of pouring, is conserved under conditions of temperature is 20 DEG C ± 2 DEG C, humidity is greater than 95%
28 days, complete the preparation of TRC template reinforced column.
2. a kind of preparation method of TRC template reinforced column according to claim 1, it is characterised in that: described
Fiber knitted net uses carbon fiber, aramid fiber, alkali-resistant glass fibre, basalt fibre, vinal or polyethylene fiber
One of dimension braiding braiding, or two different fibrages are used respectively by the radial direction and broadwise of braiding.
3. a kind of preparation method of TRC template reinforced column according to claim 1, it is characterised in that: the height
The aggregate size of performance concrete is 0.5 ~ 4mm.
4. a kind of preparation method of TRC template reinforced column according to claim 1, it is characterised in that: described
Immersing glue process: being impregnated with epoxy resin first, makees blasting treatment before fiber knitted net epoxy resin dipping is uncured, wherein
The epoxy resin of impregnated fiber woven net, curing agent, diluent mass ratio be 65 ~ 70:60 ~ 80:30 ~ 35, sand uses silicon
Sand.
5. a kind of preparation method of TRC template reinforced column according to claim 1, it is characterised in that: in order to just
In demoulding, the PVC plastic socket of cylinder is cut into three pieces in 120 °, then coheres fixation with adhesive tape again.
6. a kind of preparation method of TRC template reinforced column according to claim 1, it is characterised in that: the fibre
The number of plies of the grid and required laying of tieing up mesh grid is 1-3 layers.
7. a kind of preparation method of TRC template reinforced column according to claim 1, it is characterised in that: described
The ingredient of high performance concrete is cement, I grades of flyash, silicon ash, silica sand and water, and wherein the volume of I grades of flyash is cement, powder
The 20%-40% of coal ash, silicon ash quality sum, the volume of silicon ash be cement, flyash, silicon ash quality sum 5-10%；By quality
Than first stirring evenly cement, I grades of flyash, silicon ash and silica sand, water stirring is added later, water-reducing agent is added and stirs evenly i.e.
It can.
8. a kind of preparation method of TRC template reinforced column according to claim 7, it is characterised in that: described
The manufacturing process of high performance concrete: 52.5 portland cements are selected, in mass ratio first by 52.5 portland cements, I grades of fine coal
Ash, silicon ash and silica sand are stirred 2-3 minutes with blender, are stirring evenly and then adding into water stirring, Sika three generations water-reducing agent is then added
It is stirred for 2-3 minutes；The proportion of each component: 52.5 portland cement 500kg/m3, I grades of flyash 180kg/m3, silicon ash 40kg/
m3, the silica sand 800kg/m of 0~0.6mm of partial size3, the silica sand 400kg/m of 0.6~1.2mm of partial size3, water 252kg/m3, Sika tri-
For water-reducing agent 4.0kg/m3；For the anti-cracking ability and toughness for improving high performance concrete, Restricted Crack Width simultaneously makes matrix material
Material has the ability that a plurality of fine and closely woven crack is generated under stress condition, and the chopped strand that addition volume ratio is 0.5-2% is stirred for 3-5
Minute.
9. a kind of preparation method of TRC template reinforced column according to claim 1, it is characterised in that: pouring
Before reinforced column, in TRC template inner surface brushing interfacial agents, to guarantee between TRC template and reinforced column
Interfacial adhesion, the interfacial agents are the one of which of water-base epoxy, the third cream 1#, the third cream 2# and epoxy mortar organic interface agent,
Or cement paste or mortar, mix mineral admixture cement slurry or cement mortar, cement slurry or cement bonded sand mixed with swelling agent
Starch the one of which of inorganic interfacial agents.
10. a kind of preparation method of TRC template reinforced column according to claim 1, it is characterised in that: described
The internal model displacement when pouring TRC template is prevented every 50cm setting is horizontally-supported in internal model.
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