CN106836651A - Concrete topping cracking resistance floating-point grid, its manufacture method and application - Google Patents
Concrete topping cracking resistance floating-point grid, its manufacture method and application Download PDFInfo
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- CN106836651A CN106836651A CN201710108511.9A CN201710108511A CN106836651A CN 106836651 A CN106836651 A CN 106836651A CN 201710108511 A CN201710108511 A CN 201710108511A CN 106836651 A CN106836651 A CN 106836651A
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- floating
- point
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- cracking resistance
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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
- E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
- E04C5/02—Reinforcing elements of metal, e.g. with non-structural coatings of low bending resistance
- E04C5/04—Mats
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B15/00—Pretreatment of the material to be shaped, not covered by groups B29B7/00 - B29B13/00
- B29B15/08—Pretreatment of the material to be shaped, not covered by groups B29B7/00 - B29B13/00 of reinforcements or fillers
- B29B15/10—Coating or impregnating independently of the moulding or shaping step
- B29B15/12—Coating or impregnating independently of the moulding or shaping step of reinforcements of indefinite length
- B29B15/14—Coating or impregnating independently of the moulding or shaping step of reinforcements of indefinite length of filaments or wires
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Bridges Or Land Bridges (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
The invention discloses a kind of concrete topping cracking resistance floating-point grid, it is included intersecting the fiber grid net for constituting with some parallels by some warps, the resin-impregnated layer of fiber surface is formed at by impregnation process, multiple height identical floating-point structures of fiber grid warp and parallel intersection are formed at, floating-point structure protrudes from the upper surface of fiber grid net, and floating-point structure is up-small and down-big into taper, the fiber grid net is the orthogonal same sex grid manufactured as base material using alkaline-resisting, corrosion-resistant and not corrosion high-strength light fibrous material.The present invention takes full advantage of high-strength light fibre tensile strength cracking resistance high, impregnated by resin, and make a series of unified floating-point structure of thickness at latitude and longitude intersection point position with mould, excessively soft fabric can be so set to be converted into rigid grid web material, while controlling the depth on its Transducers Embedded in Concrete top layer by floating-point.
Description
Technical field
Technology is split the present invention relates to a kind of technical field of concrete construction, more particularly to concrete flat slab control.
Technical background
The slab concrete slab construction of mass concrete, especially placement layer by layer, such as Wharf Surface, large-scale floor,
Bridge surface layer etc., the crack for extremely easily occurring harmfulness after work, distress in concrete is always insoluble persistent ailment in engineering.
Cause concrete flat slab extremely complex the reason for cracking according to existing theory, wherein topmost reason is concrete constraining outside
Effect it is lower cannot free shrink and produce excessive outside bound stress, more than concrete tensile strength at that time, Nei Biaowen in addition
Inner bound stress caused by difference, plastic cracking is easily caused concrete flat slab cracking caused by air-drying dehydration, reserves cavity week
Easily there is stress concentration crack etc. in side.
Technology is split in conventional concrete flat board control to be had：Control mass concrete molding temperature, reduces inside concrete temperature rise,
So as to reduce inner bound stress；Strengthen concrete curing, prevent early concrete dehydration shrinkage from plastic crack occur；Using micro- swollen
Swollen concrete, compensating concrete shrinks the outer effect of contraction for causing；Increase cracking resistance reinforced mesh etc..Wherein increase reinforced mesh
It is one of effective coagulation flat board anti-cracking method, but reinforced mesh generally requires to be arranged on from concrete surface 5mm extremely
The position that 20mm or so presses close to coagulation surface and has enough coagulation bond stress can just give full play to the due control of cracking resistance reinforced mesh
Effect is split, but reinforced mesh is heavier, if being buried when wiping one's face, easily sinks, the depth of burying is difficult to control to, if using horse in advance
Stool ledges sets cracking resistance reinforced mesh, and one influences the efficiency of construction of concreting, two come in casting process inevitably by
Workmen tramples, and the depth of burying cannot equally ensure.Furthermore reinforcing bar from concrete surface too close to, in spontaneous corrosion environment
In, cover to reinforcement is too thin, and the extremely easy corrosion of reinforcing bar itself, durability is bad.
Therefore be badly in need of a kind of good endurance, easy construction, the easily controllable concrete surface reinforcement material of the depth of burying and
Its construction technology.With the development of material science and technology, the fibrous material that can be largely applied to architectural engineering coagulation cracking resistance is had,
Typically there are the finished products such as fleece, fiber grid.Fabric is excessively soft, and common construction technology well can not knit fiber
Thing is embedded in a certain specific depth in coagulation top layer, buries shallow fabric, is bonded due to lacking coagulation, it is impossible to fully
The cracking resistance effect of fiber is played, shallow fabric protective layer deficiency was buried in addition, easily broken after concrete surface layer abrasion
It is bad.
The content of the invention
For the technical barrier for solving to be run into above-mentioned engineering, the embedded difficulty of cracking resistance reinforced mesh in the prior art is overcome,
The deficiency of poor durability, while effectively being ftractureed after prevention large area concrete flat board work.
To achieve these goals, present invention employs following technical scheme：A kind of concrete topping cracking resistance floating-point lattice
Aperture plate, it is included intersecting the fiber grid net for constituting with some parallels by some warps, fiber is formed at by impregnation process
The resin-impregnated layer on surface, the multiple height identical floating-point structures for being formed at fiber grid warp and parallel intersection, floating-point
Structure protrudes from the upper surface of fiber grid net, and floating-point structure is up-small and down-big into taper, and the fiber grid net is using resistance to
The orthogonal same sex grid that alkali, the high-strength light fibrous material of corrosion-resistant and not corrosion are manufactured as base material.
A height of 5~20mm. of floating-point structure
Impregnating resin is bi-component epoxide-resin or thermoplastic resin.
The base material of the fiber grid net is selected from basalt fibre, alkali-resistant glass fibre, the fibrous material of carbon fiber.
The mesh size of concrete topping cracking resistance floating-point grid meets the percent of pass of coarse aggregate 75-85%.
A kind of method for manufacturing as above any described concrete topping cracking resistance floating-point grid, it includes following step
Suddenly：
(1) alkaline-resisting, corrosion-resistant and not corrosion high-strength light fibrous material is used to make fiber grid net as base material；
(2) resin dipping is carried out to the fiber grid net for making, mold is covered in fiber grid latitude and longitude intersection, will set
Fat injection mould in, after resin solidification fiber grid net rigidifying and latitude and longitude intersection formed floating-point structure；
(3) mould is removed.
A kind of concrete topping cracking resistance application process of floating-point grid, it includes following operating procedure：Concrete is put down
When plate is poured, when concrete coating is carried out, described concrete topping cracking resistance floating-point grid is laid in be wiped one's face
Concrete surface, uniformly pats each floating-point structure, fiber grid net is uniformly sunk until floating-point structure is fully embedded concrete
Interior, after after concrete hardening, concrete topping cracking resistance floating-point grid is combined integral with concrete.
Further, the concrete topping cracking resistance floating-point grid single or multiple lift is overlapped and is layed in concrete.
The present invention takes full advantage of high-strength light fibre tensile strength cracking resistance high, is impregnated by resin, and use mould
Have and make a series of unified floating-point structure of thickness at latitude and longitude intersection point position, excessively soft fabric can so turned
Rigid grid web material is turned to, while controlling the depth on its Transducers Embedded in Concrete top layer by floating-point.The present invention can overcome biography
The technical barrier of cracking resistance reinforced mesh constructional difficulties of uniting, the fiber for being used and resin corrosion resistance excellent performance, and with one
The fixed depth of burying, protective layer is enough to ensure that the durability of concrete topping cracking resistance floating-point grid.
Relative to other mass concrete control cracking methods, without any special when being constructed using the construction technology of this material
Equipment coordinates, and construction technology is extremely easily mastered, and operating expenses has prominent superiority, can substantially reduce large area coagulation
Measure cost is split in native flat board control.
Due to concrete topping cracking resistance floating-point grid light weight, tensile strength is high, with the help of resin floating-point structure
The position that concrete surface layer splits effect most beneficial for performance fiber control, construction technology advantages of simple, Wu Xute can be uniformly embedded in
Different equipment is assisted, and can neatly be stacked using single or multiple lift for different parts and used, and control splits effect substantially, relative to dynamic
Large volume coagulation control that is often up to ten million or even crossing hundred million is split for measure, and cost is extremely cheap, economical rationality, with wide popularization
Prospect.
Brief description of the drawings
The knot of Fig. 1 concrete topping cracking resistance floating-point grids of the invention makes schematic diagram；
Fig. 2 is the fiber schematic diagram after resin dipping；
Fig. 3 concrete flat slabs add the application schematic diagram of concrete topping cracking resistance floating-point grid；
Fig. 4 concrete toppings cracking resistance floating-point grid buries situation generalized section in concrete flat slab.
Wherein, floating-point grid 1, high-strength light fiber 2, impregnating resin 3, floating-point structure 4, concrete flat slab 5, trowel 6
Specific embodiment
With reference to specific accompanying drawing and embodiment, the invention will be further described.
As shown in Figure 1 be concrete topping cracking resistance floating-point grid of the invention, it include by some warps with it is some
Parallel is intersected the fiber grid net of composition, the resin-impregnated layer of fiber surface is formed at by impregnation process, fiber is formed at
Grid warp and multiple height identical floating-point structures 4 of parallel intersection, floating-point structure 4 protrudes from the upper table of fiber grid net
Face, and floating-point structure is up-small and down-big into taper.Fiber grid net is using alkaline-resisting, corrosion-resistant and not corrosion high-strength light fiber
The orthogonal same sex grid that material is manufactured as base material.
A height of 5~20mm of floating-point structure.
The method for manufacturing above-mentioned concrete topping cracking resistance floating-point grid, comprises the following steps：
Fiber grid net is made using alkaline-resisting, corrosion-resistant and not corrosion high-strength light fibrous material as base material.Fiber
The base material of grid is selected from basalt fibre, alkali-resistant glass fibre, the fibrous material of carbon fiber.Consider used fiber kind
Class, tensile strength, the physical property feature of elastic modelling quantity, are designed to fiber content and width of mesh and are put down with meeting concrete
The demand of plate cracking resistance.
Fiber grid net to making carries out resin dipping, mold is covered in fiber grid latitude and longitude intersection, by resin
Injection mould in, after resin solidification fiber grid net rigidifying and latitude and longitude intersection formed floating-point structure.Impregnating resin is double
Component epoxy or thermoplastic resin.Fleece is excessively soft for solving after setting rigidifying, and embedded asking is not easy to during construction
Topic.
Mould is removed, that is, obtains concrete topping cracking resistance floating-point grid.
Concrete topping cracking resistance is as follows with the general construction procedure of floating-point grid：
1) size of high-strength light fibrage into the two-way grille net of square trellis mesh, fiber consumption and mesh is used
The formula that calculating outside bound stress and inner bound stress in technology can be split according to related mass concrete control is calculated and may deposited
Stress difference, the mechanical property of binding fiber is designed.Such as using basalt fibre as base material, unit weight 2.6 ---
3.05g/cm3, its ultimate tensile strength is about 1250MPa, fracture elongation 3.5%, and width of mesh is about 25 --- 50mm, often
Square meter fiber net weight 200 --- 500g/m2。
2) spacing according to mesh determines the size of floating-point structure mold, and the thickness of floating-point structure is consistent, and control exists
5mm to 20mm.Floating-point structure is up-small and down-big, protrudes from the upper surface of grid.
3) using bi-component epoxide-resin or hot-melt resin dipping grid, using floating while in resin-impregnated journey
Point structure mold forms resin floating-point structure in latitude and longitude point of intersection.
4) according to the resin properties for being used, such as preferably, recovering the stronger material packaging of smooth ability can use elasticity
Coiled material is packed；If material recovers the poor material of smooth ability, preferably use flat board to pack, it is to avoid sheet material excessive deformation, be unfavorable for
Construction laying.
(site operation：)
1) according to the particle diameter of coarse aggregate, from the suitable concrete topping cracking resistance floating-point grid of width of mesh, if institute
The mesh of choosing is too small, and coarse aggregate can be caused to pass through, and concrete topping laitance is excessive, is unfavorable for concrete anticracking, if mesh
It is excessive, unit area fiber number deficiency is may result in, do not reach best control and split effect, therefore can be passed through using coarse aggregate
Rate is the grid sheet material of 80% mesh sieve diameter size.
2) after concrete flat slab is poured, first substantially smooth to concrete with the smooth coagulation face of walking beam, vibrating spear is plugged and pounded
After the completion of, workmen's laying concrete topping cracking resistance floating-point grid, the width of overlapping part is preferably 2 width of mesh
Degree.
3) workmen pats resin floating-point structure with trowel successively, makes concrete topping cracking resistance floating-point grid uniform
Sink, until floating-point structural top is just submerged by cement mortar.
4) detect whether to exist before concrete initial set causes concrete topping cracking resistance floating-point grid to float due to vibrating
Situation, take measures to pat sinking again in time.
5) quadric-plastering is carried out after concrete initial set or treatment of repeatedly wiping one's face, prevents concrete surface from concrete topping occur
The cracking resistance mapping vestige of floating-point grid.
6) maintenance process is as good as with conventional concrete construction, and the maintenance measure of concrete strictly presses specification or design requirement reality
Apply.
As shown in figure 4, after after concrete hardening, the concrete topping cracking resistance floating-point grid is combined into concrete
Overall common cracking resistance.The concrete topping cracking resistance floating-point grid can be overlapped according to applied environment needs, single or multiple lift
It is layed in concrete, it is most economical while the optimal effect of effect of prestressed to reach.
Claims (8)
1. a kind of concrete topping cracking resistance floating-point grid, its characteristic point is：Including by some warps and some parallel phases
The fiber grid net for constituting is handed over, the resin-impregnated layer of fiber surface is formed at by impregnation process, fiber grid warp is formed at
Line and multiple height identical floating-point structures of parallel intersection, floating-point structure protrude from the upper surface of fiber grid net, and floating
Point structure is up-small and down-big into taper, and the fiber grid net is using alkaline-resisting, corrosion-resistant and not corrosion high-strength light undulation degree
Expect the orthogonal same sex grid manufactured as base material.
2. concrete topping cracking resistance floating-point grid according to claim 1, its characteristic point is：The height of floating-point structure
It is 5~20mm.
3. concrete topping cracking resistance floating-point grid according to claim 1, its characteristic point is：Impregnating resin is double
Component epoxy or thermoplastic resin.
4. concrete topping cracking resistance floating-point grid according to claim 1, its characteristic point is：The fiber grid
The base material of net is selected from basalt fibre, alkali-resistant glass fibre, the fibrous material of carbon fiber.
5. concrete topping cracking resistance floating-point grid according to claim 1, its characteristic point is：Concrete topping resists
Split the percent of pass that coarse aggregate 75-85% is met with the mesh size of floating-point grid.
6. a kind of method for manufacturing concrete topping cracking resistance as described in Claims 1 to 5 is any floating-point grid, its feature
It is to comprise the following steps：
(1) alkaline-resisting, corrosion-resistant and not corrosion high-strength light fibrous material is used to make fiber grid net as base material；
(2) resin dipping is carried out to the fiber grid net for making, mold is covered in fiber grid latitude and longitude intersection, resin is noted
Fiber grid net rigidifying and floating-point structure is formed in entering mould, after resin solidification in latitude and longitude intersection；
(3) mould is removed.
7. a kind of concrete topping cracking resistance application process of floating-point grid, it is characterised in that including following operating procedure：It is mixed
When solidifying soil flat board is poured, when concrete coating is carried out, any described concrete topping cracking resistance of Claims 1 to 5 is used floating
Point grid be laid in concrete surface to be wiped one's face, uniformly pat each floating-point structure, make fiber grid net uniformly sink until
Floating-point structure is fully embedded in concrete, after after concrete hardening, concrete topping cracking resistance floating-point grid and the coagulation
Soil combines integral.
8. the concrete topping cracking resistance according to claim 7 application process of floating-point grid, it is characterised in that：It is described
Concrete topping cracking resistance floating-point grid single or multiple lift is overlapped and is layed in concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710108511.9A CN106836651B (en) | 2017-02-27 | 2017-02-27 | Floating point grid net for cracking resistance of concrete surface layer, manufacturing method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710108511.9A CN106836651B (en) | 2017-02-27 | 2017-02-27 | Floating point grid net for cracking resistance of concrete surface layer, manufacturing method and application thereof |
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| CN106836651A true CN106836651A (en) | 2017-06-13 |
| CN106836651B CN106836651B (en) | 2023-07-14 |
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| CN201710108511.9A Active CN106836651B (en) | 2017-02-27 | 2017-02-27 | Floating point grid net for cracking resistance of concrete surface layer, manufacturing method and application thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112553747A (en) * | 2020-12-25 | 2021-03-26 | 山东路德新材料股份有限公司 | Preparation method of hybrid fiber warp-knitted grating |
| CN116180984A (en) * | 2023-01-13 | 2023-05-30 | 同济大学 | Manufacturing method of composite stirrup grid framework |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86105936A (en) * | 1985-12-26 | 1987-07-01 | 清水建设株式会社 | Concrete reinforcing unit |
| CN1525027A (en) * | 2003-02-28 | 2004-09-01 | 深圳市海川实业股份有限公司 | Application of aramid fiber grille in concrete structural engineering |
| CN201981526U (en) * | 2010-12-28 | 2011-09-21 | 泰安路德工程材料有限公司 | Salient-point consolidation-type glass-plastic composite geogrid |
| JP2013079517A (en) * | 2011-10-04 | 2013-05-02 | Sho-Bond Corp | Concrete surface reinforcing structure and method and net-like reinforcement material made of fiber-reinforced resin |
-
2017
- 2017-02-27 CN CN201710108511.9A patent/CN106836651B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86105936A (en) * | 1985-12-26 | 1987-07-01 | 清水建设株式会社 | Concrete reinforcing unit |
| CN1525027A (en) * | 2003-02-28 | 2004-09-01 | 深圳市海川实业股份有限公司 | Application of aramid fiber grille in concrete structural engineering |
| CN201981526U (en) * | 2010-12-28 | 2011-09-21 | 泰安路德工程材料有限公司 | Salient-point consolidation-type glass-plastic composite geogrid |
| JP2013079517A (en) * | 2011-10-04 | 2013-05-02 | Sho-Bond Corp | Concrete surface reinforcing structure and method and net-like reinforcement material made of fiber-reinforced resin |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112553747A (en) * | 2020-12-25 | 2021-03-26 | 山东路德新材料股份有限公司 | Preparation method of hybrid fiber warp-knitted grating |
| CN116180984A (en) * | 2023-01-13 | 2023-05-30 | 同济大学 | Manufacturing method of composite stirrup grid framework |
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| CN106836651B (en) | 2023-07-14 |
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