CN103541559A - Reinforced composite board based on concrete bending member - Google Patents
Reinforced composite board based on concrete bending member Download PDFInfo
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- CN103541559A CN103541559A CN201310547509.3A CN201310547509A CN103541559A CN 103541559 A CN103541559 A CN 103541559A CN 201310547509 A CN201310547509 A CN 201310547509A CN 103541559 A CN103541559 A CN 103541559A
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- fibrous material
- reinforced composite
- composite sheet
- sheet material
- mortar
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- 239000002131 composite material Substances 0.000 title claims abstract description 21
- 238000005452 bending Methods 0.000 title abstract description 3
- 239000002657 fibrous material Substances 0.000 claims abstract description 56
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 25
- 239000000835 fiber Substances 0.000 claims abstract description 22
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 20
- 239000010959 steel Substances 0.000 claims abstract description 20
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 14
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 3
- 239000004917 carbon fiber Substances 0.000 claims abstract description 3
- 239000003365 glass fiber Substances 0.000 claims abstract description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims description 16
- 239000008187 granular material Substances 0.000 claims description 13
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 12
- 239000011707 mineral Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 5
- 239000003292 glue Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 230000002929 anti-fatigue Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
- Reinforcement Elements For Buildings (AREA)
Abstract
The invention relates to the technical field of building structure reinforcing, in particular to a reinforced composite board based on a concrete bending member. The composite board is formed by two parts including high-strength mortar and a prestress fiber material. The fiber material comprises a carbon fiber sheet, a glass fiber sheet and the like. The high-strength mortar is connected with the fiber material through a certain amount of steel fiber in the special shape, and the fiber material and the high-strength mortar are effectively bonded to form the novel composite board. The composite board can effectively overcome the shortcoming that the fiber material is peeled and damaged after the structure is stressed due to the fact that the concrete surface is unsmooth, greatly improves fiber strength utilization rate and improves a reinforcing effect.
Description
Technical field
The present invention relates to Structures Reinforced Technique field, particularly relate to a kind of composite board of reinforcing based on concrete flexural member.
Background technology
China founds the state and surpassed for 60 anniversaries, and a large amount of buildings has surpassed design reference period, and these building structure, bridge have existed potential safety hazard; In addition, even if do not reach building structure, the bridge of design reference period, due to China's expanding economy, the load that old building, bridge bear increases day by day, has caused too the damage of building structure, bridge; In addition a large amount of natural calamities also can cause the damage in various degree of a large amount of building structure, bridge.Thereby, these structures are reinforced, recovering its necessary reliability becomes important work of field of civil engineering.In current numerous structural strengthening technology, the fibrous material reinforcing technique occurring is in recent years widely used with its unique advantage, and the Heterosis of this reinforcing mode is: reinforcement material is lightweight, the rigidity of structure after reinforcing and intensity is high, corrosion resistance high.Yet this technology also exists inborn defect, the concrete surface of pasting fibrous material is not smooth, and the bondline thickness being coated with is difficult to ensure card conventionally.In this case, often occur the stripping damage of fibrous material when the member of reinforcing continues bearing load, the stress while producing stripping damage on fibrous material, conventionally in reduced levels, that is to say that the intensity of fibrous material is not fully utilized.Thereby cause the effect of this reinforcing to be had a greatly reduced quality.In order to overcome the problem of stripping damage, conventionally before pasting fibrous material, fibrous material is carried out to prestressed stretch-draw, due to the low-down feature of shear strength of fiber, stretch-draw, anchoring fibrous material are very difficult, corresponding construction technology is very complicated.In order to utilize fully the intensity of fibrous material, and simplify construction technology, be badly in need of a kind of composite consolidation sheet material based on fibrous material of exploitation.
Summary of the invention
The technical problem that the present invention mainly solves is the problem that during conventional concrete flexural member is reinforced, stripping damage easily occurs fibrous material.By being compounded to form composite board by fibrous material stretch-draw and with high-strength mortar, then paste with reinforced structure.Thereby solve the problem of fibrous material generation stripping damage.The ability that improves reinforced structure carrying, structure has the functional requirement that enough reliabilitys meet structure.
The present invention is that a kind of novel concrete flexural member is reinforced sheet material, and this material is the reinforcing sheet material being compounded to form by the fibrous material after pre-stretch-draw and high-strength mortar.Shown in Figure 1.
Fibrous material (carbon fiber plate, glass fibre sheet etc.) carries out pre-stretch-draw by facility, and the prestress value on fibrous material is controlled at 10MPa-40MPa, makes fibrous material can under the effect of pre-tensile stress, guarantee its planeness.Because prestress value is in reduced levels, less demanding to tension construction technology, without complicated tensioner.Shown in Figure 1.
On the fibrous material in tensile state, be coated with and reinforce organic gel, guarantee to reinforce organic gel and can go deep into fully fiber.
Before reinforcing organic gel initial set; on fibrous material, arrange the steel fibre of special shape; as shown in Figure 2; guarantee after steel fibre and fibrous material bonding; the vertical height of each steel fibre is not less than 10mm; not higher than the height of high-strength mortar, then at the mineral granule (coarse sand granule of 4～6mm or handstone) through cleaning-drying that perfuses of fibrous material surface uniform.And guarantee that this operation also completes before reinforcing organic gel initial set, as shown in Figure 3.
After reinforcing organic gel final set.On mineral granule, spread high-strength mortar, the intensity of high-strength mortar is not less than M30, thickness between 20mm～30mm.
High-strength mortar reach design strength 70% time, remove the pretension on fibrous material, and the composite board size forming revised.
Working mechanism of the present invention is summarized as follows:
The main cause that stripping damage occurs fibrous material on concrete flexural member is the out-of-flatness on flexural member surface.In order to address this problem, just require fibrous material all the time in straightened condition, in order to reach this object, in the manufacturing process of this reinforced composite sheet material, all the time fibrous material is applied to pretension, make it in straightened condition.The pretension that fibrous material is applied can not be excessive, otherwise can on the composite board forming, produce distortion, and the pre-tensile stress on fibrous material should be controlled at 10MPa-40MPa.Because its prestress value is lower, stretch-draw is less demanding, so without complicated tensioner and tensioning process.In order to guarantee the effective adhesive that has of high-strength mortar and fibrous material, on fibrous material, paste steel fibre (as shown in Figure 3) and the mineral granule of definite shape.Wherein, the effect of mineral granule is to increase fibrous material and bonding with high-strength mortar.The effect of steel fibre has two aspects, and one, due to the special shape of steel fibre, a part can be bonded on fibrous material, and another part can be anchored in mortar, thereby has increased being connected between fibrous material and high-strength mortar, guarantees bi-material co-operation; Two, the part of the steel fibre in high-strength mortar can effectively stop generation and the expansion of the inner microcrack of matrix mortar material, strengthened the performance of tension, bending resistance, shock resistance and the antifatigue of high-strength mortar, thereby improved the strength and ductility of high-strength mortar, guaranteed that fibrous material can bring into play the tensile strength of self more fully.
Accompanying drawing explanation:
Front elevation view and the side elevational view of accompanying drawing 1 composite board of the present invention.
Accompanying drawing 2 steel fibres and the mineral granule bonding situation top view on fibrous material.
Accompanying drawing 3 steel fibres and the mineral granule bonding situation right view on fibrous material.
Accompanying drawing 4 steel fibres and the mineral granule bonding situation elevation on fibrous material.
The 1st kind of steel fibre shape schematic diagram of accompanying drawing 5.
The 2nd kind of steel fibre shape schematic diagram of accompanying drawing 6.
In figure: 1-high-strength mortar, 2-fibrous material, 3-the first steel fibre, 4-the second steel fibre, 5-mineral granule
The specific embodiment:
Below in conjunction with the specific embodiment and accompanying drawing, the present invention is described in further detail.
The first step applies prestressing force to fibrous material, and the two ends of fibrous material are anchored on straining device, carries out stretch-draw and guarantees that fibrous material surface is straight, waits to reach after prestress control value to stop stretch-draw and keep prestressing force.
After second step stretch-draw, in the higher PVC template of fibrous material bottom pad glazing slippery, then on fiber, organic gel is reinforced in brushing, pastes steel fibre, the mineral granule of the special shape of some before glue initial set.
After the 3rd step structure glue final set, on mineral granule, spread the high-strength mortar that thickness is 20mm-30mm, and carry out maintenance.
The 4th step wait until high-strength mortar reach design strength 70% time, remove the prestressing force on fibrous material, check that whether fiber smooth, and the size of the composite board forming revised.
Claims (6)
1. the reinforced composite sheet material based on concrete flexural member, is characterized in that: described reinforced composite sheet material consists of high-strength mortar and fibrous material, and described fibrous material comprises carbon fiber plate, glass fibre sheet etc.Between bi-material, by reinforcing organic gel, mineral granule, be connected with steel fibre.
2. a kind of reinforced composite sheet material based on concrete flexural member according to claim 1, is characterized in that: the mortar strength of high-strength mortar is not less than M30.
3. a kind of reinforced composite sheet material based on concrete flexural member according to claim 1, is characterized in that: in manufacture process, fibrous material is all the time in pre-tensile state, and the pre-tensile stress on fibrous material should be controlled at 10MPa-40MPa.
4. a kind of reinforced composite sheet material based on concrete flexural member according to claim 1, is characterized in that: the steel fibre height sticking on fibrous material is not less than 10mm, and the length of steel fiber that is namely anchored in high-strength mortar is not less than 10mm.
5. a kind of reinforced composite sheet material based on concrete flexural member according to claim 1, is characterized in that: on fibrous material, paste after steel fibre, paste mineral granule, this process guaranteed to reinforce organic gel glue before initial set.
6. a kind of reinforced composite sheet material based on concrete flexural member according to claim 1, is characterized in that: fibrous material is carried out after pre-stretch-draw, in the high PVC template of its underpart pad glazing slippery; When preventing from smearing mortar on fibrous material, cause this fibrous material to bend.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310547509.3A CN103541559B (en) | 2013-11-07 | 2013-11-07 | Reinforced composite board based on concrete bending member |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310547509.3A CN103541559B (en) | 2013-11-07 | 2013-11-07 | Reinforced composite board based on concrete bending member |
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| Publication Number | Publication Date |
|---|---|
| CN103541559A true CN103541559A (en) | 2014-01-29 |
| CN103541559B CN103541559B (en) | 2015-07-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310547509.3A Expired - Fee Related CN103541559B (en) | 2013-11-07 | 2013-11-07 | Reinforced composite board based on concrete bending member |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106555481A (en) * | 2016-10-27 | 2017-04-05 | 湖南大学 | The device and method of prestretching fiber composite board reinforced steel concrete flexural member |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86100604A (en) * | 1986-01-20 | 1987-08-05 | 林祥孝 | Improved glass fibre concrete panels |
| JPH09242342A (en) * | 1996-03-08 | 1997-09-16 | Chem Form:Kk | Repair method of structure by carbon-fiber reinforced plastic sheet |
| JP2000220304A (en) * | 1999-02-03 | 2000-08-08 | Taisei Corp | Reinforcing method for concrete structure by carbon fiber sheet built-in cement-mortar composite plate |
| CN201074408Y (en) * | 2007-07-31 | 2008-06-18 | 上海维固工程实业有限公司 | Reinforced structure for ultra-high strength micro-steel fibre belt |
| CN203256955U (en) * | 2013-05-10 | 2013-10-30 | 南京倍立达新材料系统工程股份有限公司 | Three-dimensional cavity fiber structure reinforced cement machine-made board |
-
2013
- 2013-11-07 CN CN201310547509.3A patent/CN103541559B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86100604A (en) * | 1986-01-20 | 1987-08-05 | 林祥孝 | Improved glass fibre concrete panels |
| JPH09242342A (en) * | 1996-03-08 | 1997-09-16 | Chem Form:Kk | Repair method of structure by carbon-fiber reinforced plastic sheet |
| JP2000220304A (en) * | 1999-02-03 | 2000-08-08 | Taisei Corp | Reinforcing method for concrete structure by carbon fiber sheet built-in cement-mortar composite plate |
| CN201074408Y (en) * | 2007-07-31 | 2008-06-18 | 上海维固工程实业有限公司 | Reinforced structure for ultra-high strength micro-steel fibre belt |
| CN203256955U (en) * | 2013-05-10 | 2013-10-30 | 南京倍立达新材料系统工程股份有限公司 | Three-dimensional cavity fiber structure reinforced cement machine-made board |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106555481A (en) * | 2016-10-27 | 2017-04-05 | 湖南大学 | The device and method of prestretching fiber composite board reinforced steel concrete flexural member |
| CN106555481B (en) * | 2016-10-27 | 2018-08-14 | 湖南大学 | The device and method of prestretching fiber composite board reinforced steel concrete flexural member |
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| Publication number | Publication date |
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| CN103541559B (en) | 2015-07-22 |
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