CN106481026A - SMA GFRP super-elasticity composite reinforcing and preparation method thereof - Google Patents
SMA GFRP super-elasticity composite reinforcing and preparation method thereof Download PDFInfo
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- CN106481026A CN106481026A CN201611158952.1A CN201611158952A CN106481026A CN 106481026 A CN106481026 A CN 106481026A CN 201611158952 A CN201611158952 A CN 201611158952A CN 106481026 A CN106481026 A CN 106481026A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/07—Reinforcing elements of material other than metal, e.g. of glass, of plastics, or not exclusively made of metal
- E04C5/073—Discrete reinforcing elements, e.g. fibres
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Abstract
The present invention relates to a kind of SMA GFRP super-elasticity composite reinforcing and preparation method thereof, a kind of preparation method of SMA GFRP super-elasticity composite reinforcing, concretely comprise the following steps：A, percent by volume is 24% the superfine SMA silk of a diameter of 0.5mm and 44% GFRP tow parallel or ring-type is placed, and be solidificated between two kinds of fibers by pultrude process with flexible ethylene base ester resin matrix, the percent by volume of flexible ethylene base ester resin matrix is 32%, by pultrude process molding, section form is using circular with reinforcing bar identical；B, for strengthening the anchoring between SMA GFRP muscle and concrete, abnormity is made on the surface of SMA GFRP muscle or surface scab is processed.The present invention, have ductility and corrosion resistance concurrently, solve the problems, such as well GFRP muscle in anti-seismic structure using limited, SMA GFRP composite reinforcing is used for areas of plasticity hinge, improve the anti-seismic performance of structure, reduce the accumulation of the residual displacement after consecutive shock, so that overall performance under consecutive shock disaster for the structure is got a promotion.
Description
Technical field
The invention belongs to architectural and civil engineering Material Field, particularly to a kind of SMA-GFRP super-elasticity composite reinforcing and its
Preparation method.
Background technology
Traditional reinforced concrete structure is mainly used reinforcing bar as reinforcement, and practical experience for many years can be sent out
Existing, reinforcing bar has following drawback：First, steel bar corrosion problem is extremely serious, especially in the structure of the coastal areas such as ocean, harbour
In, steel bar corrosion causes structural bearing capacity to substantially reduce it is impossible to reach expected service life, and huge maintenance and transformation take
With causing the waste of resource；Second, produce after reinforcement yielding excessive deformation can lead to structure occur permanent residual displacement so that
The integrated carrying ability of structure reduces.Especially when there is earthquake, the permanent plastic deformation of reinforcing bar is to cause armored concrete to tie
The main cause that structure feature is destroyed, in the event of strong aftershock, also can life-threatening safety.
In order to solve the problems, such as the corrosion of reinforcing bar, glass fibre reinforced composion（GFRP）Because of its excellent decay resistance
And receive significant attention, because GFRP is a kind of fragile material, its application in anti-seismic structure is restricted.If GFRP muscle
Xoncrete structure can introduce ductility, then not only can solve the problems, such as corrosion, and a large amount of energy that can dissipate in geological process
Amount, its use in anti-seismic structure will be no longer limited.Niti-shaped memorial alloy（Ni-Ti SMA silk：Nickel-
Titanium Shape Memory Alloy wires）There is super-elasticity and shape memory function, recoverable strain up to 6% ~
8%, in 400 ~ 500MPa, ultimate strength is up to 25% more than 1000MPa, ultimate deformation to yield stress, far above general gold
Belong to.At present, by Ni-Ti SMA silk and GFRP tow and resin matrix are mixed the SMA-GFRP super-elasticity made（Superlastic
Property：Refer to that sample produces the strain much larger than its elastic limit strain amount under external force, the strain in unloading can be automatically extensive
Multiple phenomenon）Composite reinforcing and preparation method thereof is there is not yet reported, and the optimum fiber hybrid ratio of three is research on the core.
Content of the invention
The technical problem to be solved in the present invention is the drawbacks described above how overcoming prior art, provides a kind of SMA-GFRP to surpass
Elastic composite muscle.
For solving above-mentioned technical problem, present invention also offers a kind of preparation method of SMA-GFRP super-elasticity composite reinforcing.
Technical scheme is as follows：
A kind of this SMA-GFRP super-elasticity composite reinforcing, this composite reinforcing includes SMA silk, GFRP tow and passes through pultrude process admittedly
Change the flexible ethylene base ester resin matrix between SMA silk and GFRP tow, described SMA silk（1）, GFRP tow（2）And it is soft
Sex ethylene base ester resin matrix（3）Percent by volume be respectively 24%, 44% and 32%.
It is so designed that, the hysteresis loop that non-linear, hyperelastic SMA silk makes SMA-GFRP composite reinforcing have flag-shaped and prolonging
Property, the damage accumulation minimum producing under cyclic reversed loading, xoncrete structure can be effectively improved in continuous strong earthquakes event
Under anti-seismic performance performance, and minimum destruction is produced to xoncrete structure, this is substantially better than after traditional reinforcing bar passes through to surrender
Produce permanent deformation to realize ductility.In addition, mixing, with Ni-Ti SMA silk and GFRP silk, the NEW TYPE OF COMPOSITE muscle made to be referred to as SMA-
GFRP composite reinforcing has ductility and two features of corrosion resistance concurrently, solves GFRP muscle well in anti-seismic structure using limited
Problem.Additionally, matrix material adopts flexible ethylene base ester resin matrix, it is by bisphenol type or phenol aldehyde type epoxy resin and methyl-prop
A kind of degeneration epoxy resin that olefine acid reaction obtains, is thermosetting resin, and this thermosetting resin adhesive strength and shock resistance are strong
Spend big, elongation percentage height it is ensured that the SMA silk of high-elongation can give full play to its ductility, acted on by hysteresis and improve energy
Dissipation capabilities.
As optimization, SMA-GFRP composite reinforcing is used for the areas of plasticity hinge of beam column, still adopting elsewhere in framework
GFRP muscle is as reinforcement, relatively costly due to current Ni-Ti marmem, so, both can produce a desired effect,
Saved cost again.
As optimization, described SMA silk and GFRP tow are placed in parallel.
As optimization, described SMA silk and GFRP tow ring-type are placed.
A kind of preparation method of SMA-GFRP super-elasticity composite reinforcing, concretely comprises the following steps：
A, percent by volume is 24% the superfine SMA silk of a diameter of 0.5mm and 44% GFRP tow be placed in parallel, and with soft
Sex ethylene base ester resin matrix is solidificated between two kinds of fibers by pultrude process, the volume hundred of flexible ethylene base ester resin matrix
Divide than being 32%, by pultrude process molding, section form adopts and reinforcing bar identical is circular；
B, for strengthening the anchoring between SMA-GFRP muscle and concrete, the surface of SMA-GFRP muscle is made at abnormity or surface scab
Reason.
A kind of preparation method of SMA-GFRP super-elasticity composite reinforcing, concretely comprises the following steps：
A, percent by volume is the 24% superfine SMA silk of a diameter of 0.5mm and 44% GFRP tow ring-type is placed, and with soft
Sex ethylene base ester resin matrix is solidificated between two kinds of fibers by pultrude process, the volume hundred of flexible ethylene base ester resin matrix
Divide than being 32%, by pultrude process molding, section form adopts and reinforcing bar identical is circular；
B, for strengthening the anchoring between SMA-GFRP muscle and concrete, the surface of SMA-GFRP muscle is made at abnormity or surface scab
Reason.
The invention has the beneficial effects as follows：
The present invention, has ductility and two features of corrosion resistance concurrently, solves GFRP muscle well in anti-seismic structure using limited
Problem, SMA-GFRP composite reinforcing is used for areas of plasticity hinge, improves the anti-seismic performance of structure, after reducing consecutive shock
Residual displacement accumulates, and so that overall performance under consecutive shock disaster for the structure is got a promotion.In addition, this NEW TYPE OF COMPOSITE rigidity of soft tissues degree
High, ductility is good, and has shape memory function, gradually ripe with production technology, can promote the use of in anti-seismic structure.
Brief description
Below in conjunction with the accompanying drawings this SMA-GFRP super-elasticity composite reinforcing is described further：
Fig. 1 is the structural representation of the embodiment 1 of this SMA-GFRP super-elasticity composite reinforcing；
Fig. 2 is the structural representation of the embodiment 2 of this SMA-GFRP super-elasticity composite reinforcing.
In figure：1 is SMA silk, 2 is GFRP tow, 3 is flexible ethylene base ester resin matrix.
Specific embodiment
For making the objects, technical solutions and advantages of the present invention become more apparent, develop simultaneously embodiment referring to the drawings, right
The present invention further describes.
Embodiment 1：As shown in figure 1, this SMA-GFRP super-elasticity composite reinforcing, this composite reinforcing includes SMA silk 1, GFRP tow 2
And it is solidificated in the flexible ethylene base ester resin matrix 3 between SMA silk 1 and GFRP tow 2 by pultrude process；Described SMA silk 1
It is placed in parallel with GFRP tow 2.
A kind of preparation method of SMA-GFRP super-elasticity composite reinforcing, concretely comprises the following steps：
A, percent by volume is 24% the superfine SMA silk 1 of a diameter of 0.5mm and 44% GFRP tow 2 be placed in parallel, be used in combination
Flexible ethylene base ester resin matrix 3 is solidificated between two kinds of fibers by pultrude process, the body of flexible ethylene base ester resin matrix 3
Long-pending percentage ratio is 32%, and by pultrude process molding, section form is using circular with reinforcing bar identical；
B, for strengthening the anchoring between SMA-GFRP muscle and concrete, the surface of SMA-GFRP muscle is made at abnormity or surface scab
Reason.
Embodiment 2：As shown in Fig. 2 this SMA-GFRP super-elasticity composite reinforcing, this composite reinforcing includes SMA silk 1, GFRP tow 2
And it is solidificated in the flexible ethylene base ester resin matrix 3 between SMA silk 1 and GFRP tow 2 by pultrude process；Described SMA silk 1
Place with GFRP tow 2 ring-type.
A kind of preparation method of SMA-GFRP super-elasticity composite reinforcing, concretely comprises the following steps：
A, percent by volume is 24% the superfine SMA silk 1 of a diameter of 0.5mm and 44% GFRP tow 2 ring-type place, be used in combination
Flexible ethylene base ester resin matrix 3 is solidificated between two kinds of fibers by pultrude process, the body of flexible ethylene base ester resin matrix 3
Long-pending percentage ratio is 32%, and by pultrude process molding, section form is using circular with reinforcing bar identical；
B, for strengthening the anchoring between SMA-GFRP muscle and concrete, the surface of SMA-GFRP muscle is made at abnormity or surface scab
Reason.
Comparative example 1：As shown in figure 1, this SMA-GFRP super-elasticity composite reinforcing, this composite reinforcing includes SMA silk 1, GFRP
Tow 2 and be solidificated in the flexible ethylene base ester resin matrix 3 between SMA silk 1 and GFRP tow 2 by pultrude process；Described
SMA silk 1 and GFRP tow 2 are placed in parallel.
A kind of preparation method of SMA-GFRP super-elasticity composite reinforcing, concretely comprises the following steps：
A, percent by volume is the 31.75% superfine SMA silk 1 of a diameter of 0.5mm parallel with 35.25% GFRP tow 2 is put
Put, and be solidificated between two kinds of fibers by pultrude process with flexible ethylene base ester resin matrix 3, flexible ethylene base ester resin base
The percent by volume of body 3 is 33%, and by pultrude process molding, section form is using circular with reinforcing bar identical；
B, for strengthening the anchoring between SMA-GFRP muscle and concrete, the surface of SMA-GFRP muscle is made at abnormity or surface scab
Reason.Compared with embodiment 1, simply the percent by volume of SMA silk, CFRP tow and flexible ethylene base ester resin matrix changes.
Comparative example 2：As shown in Fig. 2 this SMA-GFRP super-elasticity composite reinforcing, this composite reinforcing includes SMA silk 1, GFRP
Tow 2 and be solidificated in the flexible ethylene base ester resin matrix 3 between SMA silk 1 and GFRP tow 2 by pultrude process；Described
SMA silk 1 and GFRP tow 2 ring-type are placed.
A kind of preparation method of SMA-GFRP super-elasticity composite reinforcing, concretely comprises the following steps：
A, percent by volume is 31.75% the superfine SMA silk 1 of a diameter of 0.5mm and 35.25% GFRP tow 2 ring-type put
Put, and be solidificated between two kinds of fibers by pultrude process with flexible ethylene base ester resin matrix 3, flexible ethylene base ester resin base
The percent by volume of body 3 is 33%, and by pultrude process molding, section form is using circular with reinforcing bar identical；
B, for strengthening the anchoring between SMA-GFRP muscle and concrete, the surface of SMA-GFRP muscle is made at abnormity or surface scab
Reason.Compared with embodiment 2, simply the percent by volume of SMA silk, CFRP tow and flexible ethylene base ester resin matrix changes.
Comparative example 3：As shown in figure 1, this SMA-GFRP super-elasticity composite reinforcing, this composite reinforcing includes SMA silk 1, GFRP
Tow 2 and be solidificated in the flexible ethylene base ester resin matrix 3 between SMA silk 1 and GFRP tow 2 by pultrude process；Described
SMA silk 1 and GFRP tow 2 are placed in parallel.
A kind of preparation method of SMA-GFRP super-elasticity composite reinforcing, concretely comprises the following steps：
A, percent by volume is 40% the superfine SMA silk 1 of a diameter of 0.5mm and 28% GFRP tow 2 be placed in parallel, be used in combination
Flexible ethylene base ester resin matrix 3 is solidificated between two kinds of fibers by pultrude process, the body of flexible ethylene base ester resin matrix 3
Long-pending percentage ratio is 32%, and by pultrude process molding, section form is using circular with reinforcing bar identical；
B, for strengthening the anchoring between SMA-GFRP muscle and concrete, the surface of SMA-GFRP muscle is made at abnormity or surface scab
Reason.Compared with embodiment 1, simply the percent by volume of SMA silk, CFRP tow and flexible ethylene base ester resin matrix changes.
Comparative example 4：As shown in Fig. 2 this SMA-GFRP super-elasticity composite reinforcing, this composite reinforcing includes SMA silk 1, GFRP
Tow 2 and be solidificated in the flexible ethylene base ester resin matrix 3 between SMA silk 1 and GFRP tow 2 by pultrude process；Described
SMA silk 1 and GFRP tow 2 ring-type are placed.
A kind of preparation method of SMA-GFRP super-elasticity composite reinforcing, concretely comprises the following steps：
A, percent by volume is 40% the superfine SMA silk 1 of a diameter of 0.5mm and 28% GFRP tow 2 ring-type place, be used in combination
Flexible ethylene base ester resin matrix 3 is solidificated between two kinds of fibers by pultrude process, the body of flexible ethylene base ester resin matrix 3
Long-pending percentage ratio is 32%, and by pultrude process molding, section form is using circular with reinforcing bar identical；
B, for strengthening the anchoring between SMA-GFRP muscle and concrete, the surface of SMA-GFRP muscle is made at abnormity or surface scab
Reason.Compared with embodiment 2, simply the percent by volume of SMA silk, CFRP tow and flexible ethylene base ester resin matrix changes.
Comparative example 5：Single SMA silk, compared with embodiment 2, simply SMA silk percent by volume is 68%, CFRP tow
Percent by volume is 0%, and the percent by volume of flexible ethylene base ester resin matrix is 32%.
Comparative example 6：Single GFRP silk, compared with embodiment 2, simply SMA silk percent by volume is 0%, CFRP tow
Percent by volume is 68%, and the percent by volume of flexible ethylene base ester resin matrix is 32%.
Data Detection is carried out to above-described embodiment and comparative example, result such as following table：
By item data each in table it is found that embodiment 1 and embodiment 2 are more excellent, and embodiment 2 is optimum.
Above-mentioned specific embodiment is only the concrete case of the present invention, is not the restriction that the present invention is made with other forms,
Any those skilled in the art are changed or are modified as equivalent variations possibly also with the technology contents of the disclosure above
Equivalent embodiments.But every content without departing from technical solution of the present invention, the technical spirit according to the present invention is implemented to above
Any simple modification, equivalent variations and remodeling that example is made, all should fall into the scope of patent protection of the present invention.
Claims (5)
1. a kind of SMA-GFRP super-elasticity composite reinforcing it is characterised in that：This composite reinforcing includes SMA silk（1）, GFRP tow（2）With
And SMA silk is solidificated in by pultrude process（1）With GFRP tow（2）Between flexible ethylene base ester resin matrix（3）, described
SMA silk（1）, GFRP tow（2）And flexible ethylene base ester resin matrix（3）Percent by volume be respectively 24%, 44% and
32%.
2. SMA-GFRP super-elasticity composite reinforcing as claimed in claim 1 it is characterised in that：Described SMA silk（1）With GFRP tow
（2）It is placed in parallel.
3. SMA-GFRP super-elasticity composite reinforcing as claimed in claim 1 it is characterised in that：Described SMA silk（1）With GFRP tow
（2）Ring-type is placed.
4. as claimed in claim 2 a kind of preparation method of SMA-GFRP super-elasticity composite reinforcing it is characterised in that concrete steps
For：
A, percent by volume is 24% a diameter of 0.5mm superfine SMA silk（1）With 44% GFRP tow（2）It is placed in parallel,
And with flexible ethylene base ester resin matrix（3）It is solidificated between two kinds of fibers by pultrude process, flexible ethylene base ester resin base
Body（3）Percent by volume be 32%, by pultrude process molding, section form using and reinforcing bar identical circular；
B, for strengthening the anchoring between SMA-GFRP muscle and concrete, the surface of SMA-GFRP muscle is made at abnormity or surface scab
Reason.
5. as claimed in claim 3 a kind of preparation method of SMA-GFRP super-elasticity composite reinforcing it is characterised in that concrete steps
For：
A, percent by volume is 24% a diameter of 0.5mm superfine SMA silk（1）With 44% GFRP tow（2）Ring-type is placed,
And with flexible ethylene base ester resin matrix（3）It is solidificated between two kinds of fibers by pultrude process, flexible ethylene base ester resin base
Body（3）Percent by volume be 32%, by pultrude process molding, section form using and reinforcing bar identical circular；
B, for strengthening the anchoring between SMA-GFRP muscle and concrete, the surface of SMA-GFRP muscle is made at abnormity or surface scab
Reason.
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| CN201611158952.1A CN106481026B (en) | 2016-12-15 | 2016-12-15 | SMA-GFRP super-elasticity composite reinforcing and preparation method thereof |
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| CN201611158952.1A CN106481026B (en) | 2016-12-15 | 2016-12-15 | SMA-GFRP super-elasticity composite reinforcing and preparation method thereof |
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| CN106481026B CN106481026B (en) | 2019-07-23 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111070735A (en) * | 2019-12-30 | 2020-04-28 | 扬州大学 | Preparation and application method of prestressed shape memory alloy-continuous fiber composite bar |
| CN112384665A (en) * | 2018-04-23 | 2021-02-19 | Ocv智识资本有限责任公司 | FRP rib and method for producing same |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112384665A (en) * | 2018-04-23 | 2021-02-19 | Ocv智识资本有限责任公司 | FRP rib and method for producing same |
| CN112384665B (en) * | 2018-04-23 | 2023-01-17 | 欧文斯科宁知识产权资产有限公司 | FRP rib and method for producing same |
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| CN111070735A (en) * | 2019-12-30 | 2020-04-28 | 扬州大学 | Preparation and application method of prestressed shape memory alloy-continuous fiber composite bar |
| CN111070735B (en) * | 2019-12-30 | 2021-07-16 | 扬州大学 | Preparation and application method of prestressed shape memory alloy-continuous fiber composite bar |
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